diff --git a/novelwriter/assets/icons/typicons_dark/icons.conf b/novelwriter/assets/icons/typicons_dark/icons.conf
index 521e9ee8..fa8b8619 100644
--- a/novelwriter/assets/icons/typicons_dark/icons.conf
+++ b/novelwriter/assets/icons/typicons_dark/icons.conf
@@ -21,7 +21,7 @@ backward        = typ_chevron-left.svg
 bookmark        = typ_bookmark.svg
 bullet-off      = typ_media-record-outline.svg
 bullet-on       = typ_media-record.svg
-check           = typ_tick.svg
+checked         = mixed_input-checked.svg
 close           = typ_times.svg
 cls_archive     = typ_delete.svg
 cls_character   = typ_user.svg
@@ -41,13 +41,14 @@ forward         = typ_chevron-right.svg
 maximise        = typ_arrow-maximise.svg
 menu            = typ_th-menu.svg
 minimise        = typ_arrow-minimise.svg
+noncheckable    = mixed_input-none.svg
 proj_chapter    = mixed_document-chapter.svg
 proj_details    = typ_th-list-grey.svg
 proj_document   = typ_document-text.svg
 proj_folder     = typ_folder.svg
 proj_note       = mixed_document-note.svg
-proj_section    = mixed_document-section.svg
 proj_scene      = mixed_document-scene.svg
+proj_section    = mixed_document-section.svg
 proj_stats      = typ_chart-bar-grey.svg
 proj_title      = mixed_document-title.svg
 reference       = typ_at.svg
@@ -70,6 +71,7 @@ status_stats    = typ_chart-bar-grey.svg
 status_time     = typ_stopwatch-grey.svg
 sticky-off      = typ_pin-outline.svg
 sticky-on       = typ_pin.svg
+unchecked       = mixed_input-unchecked.svg
 up              = typ_chevron-up.svg
 view_build      = typ_export.svg
 view_editor     = mixed_edit.svg
diff --git a/novelwriter/assets/icons/typicons_dark/mixed_input-checked.svg b/novelwriter/assets/icons/typicons_dark/mixed_input-checked.svg
new file mode 100644
index 00000000..e6236d3c
--- /dev/null
+++ b/novelwriter/assets/icons/typicons_dark/mixed_input-checked.svg
@@ -0,0 +1,35 @@
+<?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"
+   version="1.2"
+   width="24"
+   height="24"
+   viewBox="0 0 24 24"
+   id="svg2803">
+  <metadata
+     id="metadata2809">
+    <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="defs2807" />
+  <path
+     d="m 13.584262,16.001 c -0.488745,0 -0.96213,-0.194108 -1.314026,-0.546016 L 8.5446014,11.73063 c -0.7261352,-0.727556 -0.7261352,-1.906167 0,-2.632325 0.7275318,-0.7275547 1.9061056,-0.7275547 2.6350346,0 l 1.977322,1.978782 4.852541,-7.6176815 c 0.49852,-0.8993192 1.633806,-1.2246941 2.533097,-0.7247618 0.897894,0.499932 1.221862,1.6338563 0.723342,2.5317791 l -6.052061,9.7752102 c -0.283472,0.511104 -0.79037,0.858821 -1.368486,0.939817 z"
+     id="path2801"
+     style="display:inline;fill:#99cc99;fill-opacity:1;stroke-width:1.39643" />
+  <path
+     d="M 17.714285,22 H 6.2857144 C 3.9228572,22 2.0000001,20.077143 2.0000001,17.714285 V 6.2857144 c 0,-2.3628572 1.9228571,-4.2857143 4.2857143,-4.2857143 h 7.1428566 c 0.79,0 1.428572,0.64 1.428572,1.4285714 0,0.7885715 -0.638572,1.4285715 -1.428572,1.4285715 H 6.2857144 c -0.7885714,0 -1.4285714,0.6414285 -1.4285714,1.4285714 V 17.714285 c 0,0.787144 0.64,1.428572 1.4285714,1.428572 H 17.714285 c 0.788572,0 1.428572,-0.641428 1.428572,-1.428572 V 13.428571 C 19.142857,12.64 19.781429,12 20.571429,12 21.361429,12 22,12.64 22,13.428571 v 4.285714 C 22,20.077143 20.077143,22 17.714285,22 Z"
+     id="path3504"
+     style="display:inline;fill:#848484;fill-opacity:1;stroke-width:1.42857" />
+</svg>
diff --git a/novelwriter/assets/icons/typicons_dark/mixed_input-none.svg b/novelwriter/assets/icons/typicons_dark/mixed_input-none.svg
new file mode 100644
index 00000000..a34897ee
--- /dev/null
+++ b/novelwriter/assets/icons/typicons_dark/mixed_input-none.svg
@@ -0,0 +1,31 @@
+<?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"
+   version="1.2"
+   width="24"
+   height="24"
+   viewBox="0 0 24 24"
+   id="svg2803">
+  <metadata
+     id="metadata2809">
+    <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="defs2807" />
+  <path
+     id="path3524"
+     style="display:inline;fill:#848484;fill-opacity:1;stroke-width:1.42857"
+     d="M 2,17.714286 V 6.2857143 C 2,3.9228571 3.9228567,2 6.2857144,2 H 17.714286 C 20.077143,2 22,3.9228571 22,6.2857143 v 7.1428567 c 0,0.79 -0.64,1.428572 -1.428571,1.428572 -0.788572,0 -1.428572,-0.638572 -1.428572,-1.428572 V 6.2857143 c 0,-0.7885714 -0.641428,-1.4285714 -1.428571,-1.4285714 H 6.2857144 c -0.7871433,0 -1.4285711,0.64 -1.4285711,1.4285714 V 17.714286 c 0,0.788571 0.6414278,1.428571 1.4285711,1.428571 H 10.571429 C 11.36,19.142857 12,19.781429 12,20.571429 12,21.361429 11.36,22 10.571429,22 H 6.2857144 C 3.9228567,22 2,20.077143 2,17.714286 Z M 17.714286,22 H 6.2857143 C 3.9228571,22 2,20.077143 2,17.714286 V 6.2857143 C 2,3.9228571 3.9228571,2 6.2857143,2 h 7.1428567 c 0.79,0 1.428572,0.64 1.428572,1.4285714 0,0.7885715 -0.638572,1.4285715 -1.428572,1.4285715 H 6.2857143 c -0.7885714,0 -1.4285714,0.6414285 -1.4285714,1.4285714 V 17.714286 c 0,0.787143 0.64,1.428571 1.4285714,1.428571 H 17.714286 c 0.788571,0 1.428571,-0.641428 1.428571,-1.428571 V 13.428571 C 19.142857,12.64 19.781429,12 20.571429,12 21.361429,12 22,12.64 22,13.428571 v 4.285715 C 22,20.077143 20.077143,22 17.714286,22 Z" />
+</svg>
diff --git a/novelwriter/assets/icons/typicons_dark/mixed_input-unchecked.svg b/novelwriter/assets/icons/typicons_dark/mixed_input-unchecked.svg
new file mode 100644
index 00000000..65ec7feb
--- /dev/null
+++ b/novelwriter/assets/icons/typicons_dark/mixed_input-unchecked.svg
@@ -0,0 +1,35 @@
+<?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"
+   version="1.2"
+   width="24"
+   height="24"
+   viewBox="0 0 24 24"
+   id="svg2803">
+  <metadata
+     id="metadata2809">
+    <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="defs2807" />
+  <path
+     d="M 17.714285,22 H 6.2857144 C 3.9228572,22 2.0000001,20.077143 2.0000001,17.714285 V 6.2857144 c 0,-2.3628572 1.9228571,-4.2857143 4.2857143,-4.2857143 h 7.1428566 c 0.79,0 1.428572,0.64 1.428572,1.4285714 0,0.7885715 -0.638572,1.4285715 -1.428572,1.4285715 H 6.2857144 c -0.7885714,0 -1.4285714,0.6414285 -1.4285714,1.4285714 V 17.714285 c 0,0.787144 0.64,1.428572 1.4285714,1.428572 H 17.714285 c 0.788572,0 1.428572,-0.641428 1.428572,-1.428572 V 13.428571 C 19.142857,12.64 19.781429,12 20.571429,12 21.361429,12 22,12.64 22,13.428571 v 4.285714 C 22,20.077143 20.077143,22 17.714285,22 Z"
+     id="path3504"
+     style="display:inline;fill:#848484;fill-opacity:1;stroke-width:1.42857" />
+  <path
+     id="rect6074"
+     style="fill:#d64848;fill-opacity:1;stroke:none;stroke-width:1.111;stroke-linecap:round;stroke-linejoin:round;stroke-opacity:1"
+     d="m 17.334285,4.1025907 c -0.485011,0.025418 -0.960337,0.2377891 -1.3125,0.6289063 l -4.007813,4.451172 -2,-2.2226564 C 9.3096456,6.1777784 8.1126129,6.1150607 7.3303787,6.8193876 6.5481444,7.5237145 6.4854268,8.720747 7.1897537,9.502981 l 2.2675781,2.519532 -2.2675781,2.517578 c -0.7043269,0.782234 -0.6416093,1.979267 0.140625,2.683594 0.7822342,0.704327 1.9792669,0.641609 2.6835933,-0.140625 l 2,-2.220703 2,2.220703 c 0.704327,0.782234 1.90136,0.844952 2.683594,0.140625 0.782234,-0.704327 0.844952,-1.90136 0.140625,-2.683594 l -2.267578,-2.517578 4.27539,-4.7480473 C 19.55033,6.4922315 19.487613,5.2951988 18.705378,4.590872 18.314261,4.2387085 17.819295,4.0771724 17.334285,4.1025907 Z" />
+</svg>
diff --git a/novelwriter/assets/icons/typicons_light/icons.conf b/novelwriter/assets/icons/typicons_light/icons.conf
index 1b6b1348..5212b685 100644
--- a/novelwriter/assets/icons/typicons_light/icons.conf
+++ b/novelwriter/assets/icons/typicons_light/icons.conf
@@ -21,7 +21,7 @@ backward        = typ_chevron-left.svg
 bookmark        = typ_bookmark.svg
 bullet-off      = typ_media-record-outline.svg
 bullet-on       = typ_media-record.svg
-check           = typ_tick.svg
+checked         = mixed_input-checked.svg
 close           = typ_times.svg
 cls_archive     = typ_delete.svg
 cls_character   = typ_user.svg
@@ -41,13 +41,14 @@ forward         = typ_chevron-right.svg
 maximise        = typ_arrow-maximise.svg
 menu            = typ_th-menu.svg
 minimise        = typ_arrow-minimise.svg
+noncheckable    = mixed_input-none.svg
 proj_chapter    = mixed_document-chapter.svg
 proj_details    = typ_th-list-grey.svg
 proj_document   = typ_document-text.svg
 proj_folder     = typ_folder.svg
 proj_note       = mixed_document-note.svg
-proj_section    = mixed_document-section.svg
 proj_scene      = mixed_document-scene.svg
+proj_section    = mixed_document-section.svg
 proj_stats      = typ_chart-bar-grey.svg
 proj_title      = mixed_document-title.svg
 reference       = typ_at.svg
@@ -70,6 +71,7 @@ status_stats    = typ_chart-bar-grey.svg
 status_time     = typ_stopwatch-grey.svg
 sticky-off      = typ_pin-outline.svg
 sticky-on       = typ_pin.svg
+unchecked       = mixed_input-unchecked.svg
 up              = typ_chevron-up.svg
 view_build      = typ_export.svg
 view_editor     = mixed_edit.svg
diff --git a/novelwriter/assets/icons/typicons_light/mixed_input-checked.svg b/novelwriter/assets/icons/typicons_light/mixed_input-checked.svg
new file mode 100644
index 00000000..d41ac684
--- /dev/null
+++ b/novelwriter/assets/icons/typicons_light/mixed_input-checked.svg
@@ -0,0 +1,35 @@
+<?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"
+   version="1.2"
+   width="24"
+   height="24"
+   viewBox="0 0 24 24"
+   id="svg2803">
+  <metadata
+     id="metadata2809">
+    <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="defs2807" />
+  <path
+     d="m 13.584262,16.001 c -0.488745,0 -0.96213,-0.194108 -1.314026,-0.546016 L 8.5446014,11.73063 c -0.7261352,-0.727556 -0.7261352,-1.906167 0,-2.632325 0.7275318,-0.7275547 1.9061056,-0.7275547 2.6350346,0 l 1.977322,1.978782 4.852541,-7.6176815 c 0.49852,-0.8993192 1.633806,-1.2246941 2.533097,-0.7247618 0.897894,0.499932 1.221862,1.6338563 0.723342,2.5317791 l -6.052061,9.7752102 c -0.283472,0.511104 -0.79037,0.858821 -1.368486,0.939817 z"
+     id="path2801"
+     style="display:inline;fill:#718c00;fill-opacity:1;stroke-width:1.39643" />
+  <path
+     d="M 17.714285,22 H 6.2857144 C 3.9228572,22 2.0000001,20.077143 2.0000001,17.714285 V 6.2857144 c 0,-2.3628572 1.9228571,-4.2857143 4.2857143,-4.2857143 h 7.1428566 c 0.79,0 1.428572,0.64 1.428572,1.4285714 0,0.7885715 -0.638572,1.4285715 -1.428572,1.4285715 H 6.2857144 c -0.7885714,0 -1.4285714,0.6414285 -1.4285714,1.4285714 V 17.714285 c 0,0.787144 0.64,1.428572 1.4285714,1.428572 H 17.714285 c 0.788572,0 1.428572,-0.641428 1.428572,-1.428572 V 13.428571 C 19.142857,12.64 19.781429,12 20.571429,12 21.361429,12 22,12.64 22,13.428571 v 4.285714 C 22,20.077143 20.077143,22 17.714285,22 Z"
+     id="path3504"
+     style="display:inline;fill:#333333;fill-opacity:1;stroke-width:1.42857" />
+</svg>
diff --git a/novelwriter/assets/icons/typicons_light/mixed_input-none.svg b/novelwriter/assets/icons/typicons_light/mixed_input-none.svg
new file mode 100644
index 00000000..dde0c2cd
--- /dev/null
+++ b/novelwriter/assets/icons/typicons_light/mixed_input-none.svg
@@ -0,0 +1,31 @@
+<?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"
+   version="1.2"
+   width="24"
+   height="24"
+   viewBox="0 0 24 24"
+   id="svg2803">
+  <metadata
+     id="metadata2809">
+    <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="defs2807" />
+  <path
+     id="path3524"
+     style="display:inline;fill:#333333;fill-opacity:1;stroke-width:1.42857"
+     d="M 2,17.714286 V 6.2857143 C 2,3.9228571 3.9228567,2 6.2857144,2 H 17.714286 C 20.077143,2 22,3.9228571 22,6.2857143 v 7.1428567 c 0,0.79 -0.64,1.428572 -1.428571,1.428572 -0.788572,0 -1.428572,-0.638572 -1.428572,-1.428572 V 6.2857143 c 0,-0.7885714 -0.641428,-1.4285714 -1.428571,-1.4285714 H 6.2857144 c -0.7871433,0 -1.4285711,0.64 -1.4285711,1.4285714 V 17.714286 c 0,0.788571 0.6414278,1.428571 1.4285711,1.428571 H 10.571429 C 11.36,19.142857 12,19.781429 12,20.571429 12,21.361429 11.36,22 10.571429,22 H 6.2857144 C 3.9228567,22 2,20.077143 2,17.714286 Z M 17.714286,22 H 6.2857143 C 3.9228571,22 2,20.077143 2,17.714286 V 6.2857143 C 2,3.9228571 3.9228571,2 6.2857143,2 h 7.1428567 c 0.79,0 1.428572,0.64 1.428572,1.4285714 0,0.7885715 -0.638572,1.4285715 -1.428572,1.4285715 H 6.2857143 c -0.7885714,0 -1.4285714,0.6414285 -1.4285714,1.4285714 V 17.714286 c 0,0.787143 0.64,1.428571 1.4285714,1.428571 H 17.714286 c 0.788571,0 1.428571,-0.641428 1.428571,-1.428571 V 13.428571 C 19.142857,12.64 19.781429,12 20.571429,12 21.361429,12 22,12.64 22,13.428571 v 4.285715 C 22,20.077143 20.077143,22 17.714286,22 Z" />
+</svg>
diff --git a/novelwriter/assets/icons/typicons_light/mixed_input-unchecked.svg b/novelwriter/assets/icons/typicons_light/mixed_input-unchecked.svg
new file mode 100644
index 00000000..e3bb7a58
--- /dev/null
+++ b/novelwriter/assets/icons/typicons_light/mixed_input-unchecked.svg
@@ -0,0 +1,35 @@
+<?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"
+   version="1.2"
+   width="24"
+   height="24"
+   viewBox="0 0 24 24"
+   id="svg2803">
+  <metadata
+     id="metadata2809">
+    <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="defs2807" />
+  <path
+     d="M 17.714285,22 H 6.2857144 C 3.9228572,22 2.0000001,20.077143 2.0000001,17.714285 V 6.2857144 c 0,-2.3628572 1.9228571,-4.2857143 4.2857143,-4.2857143 h 7.1428566 c 0.79,0 1.428572,0.64 1.428572,1.4285714 0,0.7885715 -0.638572,1.4285715 -1.428572,1.4285715 H 6.2857144 c -0.7885714,0 -1.4285714,0.6414285 -1.4285714,1.4285714 V 17.714285 c 0,0.787144 0.64,1.428572 1.4285714,1.428572 H 17.714285 c 0.788572,0 1.428572,-0.641428 1.428572,-1.428572 V 13.428571 C 19.142857,12.64 19.781429,12 20.571429,12 21.361429,12 22,12.64 22,13.428571 v 4.285714 C 22,20.077143 20.077143,22 17.714285,22 Z"
+     id="path3504"
+     style="display:inline;fill:#333333;fill-opacity:1;stroke-width:1.42857" />
+  <path
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