diff --git a/nw/assets/icons/fallback/check-dark.svg b/nw/assets/icons/fallback/check-dark.svg
new file mode 100644
index 00000000..86e45c5d
--- /dev/null
+++ b/nw/assets/icons/fallback/check-dark.svg
@@ -0,0 +1,56 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   inkscape:version="1.0 (4035a4fb49, 2020-05-01)"
+   sodipodi:docname="tick.svg"
+   id="svg896"
+   viewBox="0 0 24 24"
+   height="24"
+   width="24"
+   version="1.2">
+  <metadata
+     id="metadata902">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title></dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <defs
+     id="defs900" />
+  <sodipodi:namedview
+     inkscape:current-layer="svg896"
+     inkscape:window-maximized="1"
+     inkscape:window-y="1"
+     inkscape:window-x="2560"
+     inkscape:cy="13.298248"
+     inkscape:cx="11.288366"
+     inkscape:zoom="34.117902"
+     inkscape:pagecheckerboard="true"
+     showgrid="false"
+     id="namedview898"
+     inkscape:window-height="1370"
+     inkscape:window-width="2560"
+     inkscape:pageshadow="2"
+     inkscape:pageopacity="0"
+     guidetolerance="10"
+     gridtolerance="10"
+     objecttolerance="10"
+     borderopacity="1"
+     bordercolor="#666666"
+     pagecolor="#ffffff" />
+  <path
+     style="stroke-width:1.3846;fill:#aeaeae;fill-opacity:1"
+     id="path894"
+     d="M 19.576035,3.3487939 C 18.237131,2.6038813 16.550693,3.0884898 15.809935,4.4246248 L 10.66893,13.676495 7.726664,10.734229 c -1.0813694,-1.0813704 -2.8342677,-1.0813704 -3.9156371,0 -1.0813693,1.081369 -1.0813693,2.834267 0,3.915637 l 5.538383,5.538383 c 0.523378,0.524762 1.2295221,0.812758 1.9578191,0.812758 l 0.383533,-0.02769 c 0.859834,-0.12046 1.614439,-0.636914 2.03674,-1.397057 L 20.650482,7.1148966 C 21.39401,5.777375 20.91217,4.0923218 19.576035,3.3487939 Z" />
+</svg>
diff --git a/nw/assets/icons/fallback/check.svg b/nw/assets/icons/fallback/check.svg
new file mode 100644
index 00000000..f815ea12
--- /dev/null
+++ b/nw/assets/icons/fallback/check.svg
@@ -0,0 +1,56 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   inkscape:version="1.0 (4035a4fb49, 2020-05-01)"
+   sodipodi:docname="tick.svg"
+   id="svg896"
+   viewBox="0 0 24 24"
+   height="24"
+   width="24"
+   version="1.2">
+  <metadata
+     id="metadata902">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title></dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <defs
+     id="defs900" />
+  <sodipodi:namedview
+     inkscape:current-layer="svg896"
+     inkscape:window-maximized="1"
+     inkscape:window-y="1"
+     inkscape:window-x="2560"
+     inkscape:cy="13.298248"
+     inkscape:cx="11.288366"
+     inkscape:zoom="34.117902"
+     inkscape:pagecheckerboard="true"
+     showgrid="false"
+     id="namedview898"
+     inkscape:window-height="1370"
+     inkscape:window-width="2560"
+     inkscape:pageshadow="2"
+     inkscape:pageopacity="0"
+     guidetolerance="10"
+     gridtolerance="10"
+     objecttolerance="10"
+     borderopacity="1"
+     bordercolor="#666666"
+     pagecolor="#ffffff" />
+  <path
+     style="stroke-width:1.3846;fill:#000000;fill-opacity:0.77999997"
+     id="path894"
+     d="M 19.576035,3.3487939 C 18.237131,2.6038813 16.550693,3.0884898 15.809935,4.4246248 L 10.66893,13.676495 7.726664,10.734229 c -1.0813694,-1.0813704 -2.8342677,-1.0813704 -3.9156371,0 -1.0813693,1.081369 -1.0813693,2.834267 0,3.915637 l 5.538383,5.538383 c 0.523378,0.524762 1.2295221,0.812758 1.9578191,0.812758 l 0.383533,-0.02769 c 0.859834,-0.12046 1.614439,-0.636914 2.03674,-1.397057 L 20.650482,7.1148966 C 21.39401,5.777375 20.91217,4.0923218 19.576035,3.3487939 Z" />
+</svg>
diff --git a/nw/assets/icons/fallback/cross-dark.svg b/nw/assets/icons/fallback/cross-dark.svg
new file mode 100644
index 00000000..64410dfb
--- /dev/null
+++ b/nw/assets/icons/fallback/cross-dark.svg
@@ -0,0 +1,56 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   version="1.2"
+   width="24"
+   height="24"
+   viewBox="0 0 24 24"
+   id="svg8936"
+   sodipodi:docname="times.svg"
+   inkscape:version="1.0rc1 (09960d6f05, 2020-04-09)">
+  <metadata
+     id="metadata8942">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <defs
+     id="defs8940" />
+  <sodipodi:namedview
+     inkscape:document-rotation="0"
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1"
+     objecttolerance="10"
+     gridtolerance="10"
+     guidetolerance="10"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
+     inkscape:window-width="2560"
+     inkscape:window-height="1344"
+     id="namedview8938"
+     showgrid="false"
+     inkscape:zoom="38.125"
+     inkscape:cx="12"
+     inkscape:cy="12"
+     inkscape:window-x="0"
+     inkscape:window-y="0"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="svg8936" />
+  <path
+     d="m 19.0412,4.9586375 c -1.014432,-1.0157327 -2.663535,-1.0157327 -3.677967,0 L 12.000001,8.3218703 8.6367669,4.9586375 c -1.0144323,-1.0157327 -2.663535,-1.0157327 -3.6779673,0 -1.0157327,1.0157328 -1.0157327,2.6622343 0,3.6779673 L 8.3207319,11.999838 4.9587996,15.36307 c -1.0157327,1.015733 -1.0157327,2.662235 0,3.677968 0.5072161,0.508516 1.1730998,0.762124 1.8389836,0.762124 0.6658835,0 1.3317669,-0.253608 1.8389837,-0.762124 l 3.3632341,-3.363233 3.363232,3.363233 c 0.507216,0.508516 1.173099,0.762124 1.838984,0.762124 0.665882,0 1.331765,-0.253608 1.838983,-0.762124 1.015733,-1.015733 1.015733,-2.662235 0,-3.677968 L 15.679268,11.999838 19.0412,8.6366048 c 1.015733,-1.015733 1.015733,-2.6622345 0,-3.6779673 z"
+     id="path8934"
+     inkscape:connector-curvature="0"
+     style="fill:#aeaeae;fill-opacity:1;stroke-width:1.30056" />
+</svg>
diff --git a/nw/assets/icons/fallback/cross.svg b/nw/assets/icons/fallback/cross.svg
new file mode 100644
index 00000000..ff91c26a
--- /dev/null
+++ b/nw/assets/icons/fallback/cross.svg
@@ -0,0 +1,55 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   inkscape:version="1.0rc1 (09960d6f05, 2020-04-09)"
+   sodipodi:docname="times.svg"
+   id="svg8936"
+   viewBox="0 0 24 24"
+   height="24"
+   width="24"
+   version="1.2">
+  <metadata
+     id="metadata8942">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <defs
+     id="defs8940" />
+  <sodipodi:namedview
+     inkscape:current-layer="svg8936"
+     inkscape:window-maximized="1"
+     inkscape:window-y="0"
+     inkscape:window-x="0"
+     inkscape:cy="12"
+     inkscape:cx="12"
+     inkscape:zoom="38.125"
+     showgrid="false"
+     id="namedview8938"
+     inkscape:window-height="1344"
+     inkscape:window-width="2560"
+     inkscape:pageshadow="2"
+     inkscape:pageopacity="0"
+     guidetolerance="10"
+     gridtolerance="10"
+     objecttolerance="10"
+     borderopacity="1"
+     bordercolor="#666666"
+     pagecolor="#ffffff" />
+  <path
+     style="fill:#000000;fill-opacity:0.78;stroke-width:1.30056"
+     inkscape:connector-curvature="0"
+     id="path8934"
+     d="m 19.0412,4.9586375 c -1.014432,-1.0157327 -2.663535,-1.0157327 -3.677967,0 L 12.000001,8.3218703 8.6367669,4.9586375 c -1.0144323,-1.0157327 -2.663535,-1.0157327 -3.6779673,0 -1.0157327,1.0157328 -1.0157327,2.6622343 0,3.6779673 L 8.3207319,11.999838 4.9587996,15.36307 c -1.0157327,1.015733 -1.0157327,2.662235 0,3.677968 0.5072161,0.508516 1.1730998,0.762124 1.8389836,0.762124 0.6658835,0 1.3317669,-0.253608 1.8389837,-0.762124 l 3.3632341,-3.363233 3.363232,3.363233 c 0.507216,0.508516 1.173099,0.762124 1.838984,0.762124 0.665882,0 1.331765,-0.253608 1.838983,-0.762124 1.015733,-1.015733 1.015733,-2.662235 0,-3.677968 L 15.679268,11.999838 19.0412,8.6366048 c 1.015733,-1.015733 1.015733,-2.6622345 0,-3.6779673 z" />
+</svg>
diff --git a/nw/assets/icons/typicons_colour_dark/icons.conf b/nw/assets/icons/typicons_colour_dark/icons.conf
index db622835..f3c96935 100644
--- a/nw/assets/icons/typicons_colour_dark/icons.conf
+++ b/nw/assets/icons/typicons_colour_dark/icons.conf
@@ -37,3 +37,5 @@ search-replace = search-replace.svg
 clear          = backspace.svg
 save           = download.svg
 edit           = pencil.svg
+check          = tick.svg
+cross          = times.svg
diff --git a/nw/assets/icons/typicons_colour_dark/tick.svg b/nw/assets/icons/typicons_colour_dark/tick.svg
new file mode 100644
index 00000000..ced8362e
--- /dev/null
+++ b/nw/assets/icons/typicons_colour_dark/tick.svg
@@ -0,0 +1,56 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   inkscape:version="1.0 (4035a4fb49, 2020-05-01)"
+   sodipodi:docname="tick.svg"
+   id="svg896"
+   viewBox="0 0 24 24"
+   height="24"
+   width="24"
+   version="1.2">
+  <metadata
+     id="metadata902">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title></dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <defs
+     id="defs900" />
+  <sodipodi:namedview
+     inkscape:current-layer="svg896"
+     inkscape:window-maximized="1"
+     inkscape:window-y="1"
+     inkscape:window-x="2560"
+     inkscape:cy="13.298248"
+     inkscape:cx="11.288366"
+     inkscape:zoom="34.117902"
+     inkscape:pagecheckerboard="true"
+     showgrid="false"
+     id="namedview898"
+     inkscape:window-height="1370"
+     inkscape:window-width="2560"
+     inkscape:pageshadow="2"
+     inkscape:pageopacity="0"
+     guidetolerance="10"
+     gridtolerance="10"
+     objecttolerance="10"
+     borderopacity="1"
+     bordercolor="#666666"
+     pagecolor="#ffffff" />
+  <path
+     style="stroke-width:1.3846;fill:#99cc99;fill-opacity:1"
+     id="path894"
+     d="M 19.576035,3.3487939 C 18.237131,2.6038813 16.550693,3.0884898 15.809935,4.4246248 L 10.66893,13.676495 7.726664,10.734229 c -1.0813694,-1.0813704 -2.8342677,-1.0813704 -3.9156371,0 -1.0813693,1.081369 -1.0813693,2.834267 0,3.915637 l 5.538383,5.538383 c 0.523378,0.524762 1.2295221,0.812758 1.9578191,0.812758 l 0.383533,-0.02769 c 0.859834,-0.12046 1.614439,-0.636914 2.03674,-1.397057 L 20.650482,7.1148966 C 21.39401,5.777375 20.91217,4.0923218 19.576035,3.3487939 Z" />
+</svg>
diff --git a/nw/assets/icons/typicons_colour_light/icons.conf b/nw/assets/icons/typicons_colour_light/icons.conf
index 9ee1d84a..d3df7d01 100644
--- a/nw/assets/icons/typicons_colour_light/icons.conf
+++ b/nw/assets/icons/typicons_colour_light/icons.conf
@@ -37,3 +37,5 @@ search-replace = search-replace.svg
 clear          = backspace.svg
 save           = download.svg
 edit           = pencil.svg
+check          = tick.svg
+cross          = times.svg
diff --git a/nw/assets/icons/typicons_colour_light/tick.svg b/nw/assets/icons/typicons_colour_light/tick.svg
new file mode 100644
index 00000000..82ced41d
--- /dev/null
+++ b/nw/assets/icons/typicons_colour_light/tick.svg
@@ -0,0 +1,56 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   inkscape:version="1.0 (4035a4fb49, 2020-05-01)"
+   sodipodi:docname="tick.svg"
+   id="svg896"
+   viewBox="0 0 24 24"
+   height="24"
+   width="24"
+   version="1.2">
+  <metadata
+     id="metadata902">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title></dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <defs
+     id="defs900" />
+  <sodipodi:namedview
+     inkscape:current-layer="svg896"
+     inkscape:window-maximized="1"
+     inkscape:window-y="1"
+     inkscape:window-x="2560"
+     inkscape:cy="13.298248"
+     inkscape:cx="11.288366"
+     inkscape:zoom="34.117902"
+     inkscape:pagecheckerboard="true"
+     showgrid="false"
+     id="namedview898"
+     inkscape:window-height="1370"
+     inkscape:window-width="2560"
+     inkscape:pageshadow="2"
+     inkscape:pageopacity="0"
+     guidetolerance="10"
+     gridtolerance="10"
+     objecttolerance="10"
+     borderopacity="1"
+     bordercolor="#666666"
+     pagecolor="#ffffff" />
+  <path
+     style="stroke-width:1.3846;fill:#718c00;fill-opacity:1"
+     id="path894"
+     d="M 19.576035,3.3487939 C 18.237131,2.6038813 16.550693,3.0884898 15.809935,4.4246248 L 10.66893,13.676495 7.726664,10.734229 c -1.0813694,-1.0813704 -2.8342677,-1.0813704 -3.9156371,0 -1.0813693,1.081369 -1.0813693,2.834267 0,3.915637 l 5.538383,5.538383 c 0.523378,0.524762 1.2295221,0.812758 1.9578191,0.812758 l 0.383533,-0.02769 c 0.859834,-0.12046 1.614439,-0.636914 2.03674,-1.397057 L 20.650482,7.1148966 C 21.39401,5.777375 20.91217,4.0923218 19.576035,3.3487939 Z" />
+</svg>
diff --git a/nw/assets/icons/typicons_grey_dark/icons.conf b/nw/assets/icons/typicons_grey_dark/icons.conf
index 3753f2d2..75268e23 100644
--- a/nw/assets/icons/typicons_grey_dark/icons.conf
+++ b/nw/assets/icons/typicons_grey_dark/icons.conf
@@ -36,3 +36,5 @@ search-replace = search-replace.svg
 clear          = backspace.svg
 save           = download.svg
 edit           = pencil.svg
+check          = tick.svg
+cross          = times.svg
diff --git a/nw/assets/icons/typicons_grey_dark/tick.svg b/nw/assets/icons/typicons_grey_dark/tick.svg
new file mode 100644
index 00000000..86e45c5d
--- /dev/null
+++ b/nw/assets/icons/typicons_grey_dark/tick.svg
@@ -0,0 +1,56 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   inkscape:version="1.0 (4035a4fb49, 2020-05-01)"
+   sodipodi:docname="tick.svg"
+   id="svg896"
+   viewBox="0 0 24 24"
+   height="24"
+   width="24"
+   version="1.2">
+  <metadata
+     id="metadata902">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title></dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <defs
+     id="defs900" />
+  <sodipodi:namedview
+     inkscape:current-layer="svg896"
+     inkscape:window-maximized="1"
+     inkscape:window-y="1"
+     inkscape:window-x="2560"
+     inkscape:cy="13.298248"
+     inkscape:cx="11.288366"
+     inkscape:zoom="34.117902"
+     inkscape:pagecheckerboard="true"
+     showgrid="false"
+     id="namedview898"
+     inkscape:window-height="1370"
+     inkscape:window-width="2560"
+     inkscape:pageshadow="2"
+     inkscape:pageopacity="0"
+     guidetolerance="10"
+     gridtolerance="10"
+     objecttolerance="10"
+     borderopacity="1"
+     bordercolor="#666666"
+     pagecolor="#ffffff" />
+  <path
+     style="stroke-width:1.3846;fill:#aeaeae;fill-opacity:1"
+     id="path894"
+     d="M 19.576035,3.3487939 C 18.237131,2.6038813 16.550693,3.0884898 15.809935,4.4246248 L 10.66893,13.676495 7.726664,10.734229 c -1.0813694,-1.0813704 -2.8342677,-1.0813704 -3.9156371,0 -1.0813693,1.081369 -1.0813693,2.834267 0,3.915637 l 5.538383,5.538383 c 0.523378,0.524762 1.2295221,0.812758 1.9578191,0.812758 l 0.383533,-0.02769 c 0.859834,-0.12046 1.614439,-0.636914 2.03674,-1.397057 L 20.650482,7.1148966 C 21.39401,5.777375 20.91217,4.0923218 19.576035,3.3487939 Z" />
+</svg>
diff --git a/nw/assets/icons/typicons_grey_light/icons.conf b/nw/assets/icons/typicons_grey_light/icons.conf
index 1479df9e..766aed98 100644
--- a/nw/assets/icons/typicons_grey_light/icons.conf
+++ b/nw/assets/icons/typicons_grey_light/icons.conf
@@ -36,3 +36,5 @@ search-replace = search-replace.svg
 clear          = backspace.svg
 save           = download.svg
 edit           = pencil.svg
+check          = tick.svg
+cross          = times.svg
diff --git a/nw/assets/icons/typicons_grey_light/tick.svg b/nw/assets/icons/typicons_grey_light/tick.svg
new file mode 100644
index 00000000..f815ea12
--- /dev/null
+++ b/nw/assets/icons/typicons_grey_light/tick.svg
@@ -0,0 +1,56 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   inkscape:version="1.0 (4035a4fb49, 2020-05-01)"
+   sodipodi:docname="tick.svg"
+   id="svg896"
+   viewBox="0 0 24 24"
+   height="24"
+   width="24"
+   version="1.2">
+  <metadata
+     id="metadata902">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title></dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <defs
+     id="defs900" />
+  <sodipodi:namedview
+     inkscape:current-layer="svg896"
+     inkscape:window-maximized="1"
+     inkscape:window-y="1"
+     inkscape:window-x="2560"
+     inkscape:cy="13.298248"
+     inkscape:cx="11.288366"
+     inkscape:zoom="34.117902"
+     inkscape:pagecheckerboard="true"
+     showgrid="false"
+     id="namedview898"
+     inkscape:window-height="1370"
+     inkscape:window-width="2560"
+     inkscape:pageshadow="2"
+     inkscape:pageopacity="0"
+     guidetolerance="10"
+     gridtolerance="10"
+     objecttolerance="10"
+     borderopacity="1"
+     bordercolor="#666666"
+     pagecolor="#ffffff" />
+  <path
+     style="stroke-width:1.3846;fill:#000000;fill-opacity:0.77999997"
+     id="path894"
+     d="M 19.576035,3.3487939 C 18.237131,2.6038813 16.550693,3.0884898 15.809935,4.4246248 L 10.66893,13.676495 7.726664,10.734229 c -1.0813694,-1.0813704 -2.8342677,-1.0813704 -3.9156371,0 -1.0813693,1.081369 -1.0813693,2.834267 0,3.915637 l 5.538383,5.538383 c 0.523378,0.524762 1.2295221,0.812758 1.9578191,0.812758 l 0.383533,-0.02769 c 0.859834,-0.12046 1.614439,-0.636914 2.03674,-1.397057 L 20.650482,7.1148966 C 21.39401,5.777375 20.91217,4.0923218 19.576035,3.3487939 Z" />
+</svg>
diff --git a/nw/gui/icons.py b/nw/gui/icons.py
index db5d6e9e..f1a33145 100644
--- a/nw/gui/icons.py
+++ b/nw/gui/icons.py
@@ -93,6 +93,8 @@ class GuiIcons:
         "clear"          : (QStyle.SP_LineEditClearButton, "clear_left"),
         "save"           : (QStyle.SP_DialogSaveButton,    "document-save"),
         "edit"           : (None,                          None),
+        "check"          : (None,                          None),
+        "cross"          : (None,                          None),
 
         ## Other Icons
         "warning"        : (QStyle.SP_MessageBoxWarning,   "dialog-warning"),