The fixed width setting should really be maximum width. The text margins should be minimum margins.

nw/config.py

@@ -76,7 +76,7 @@ class Config:
         ## Text Editor
         self.textFont        = None
         self.textSize        = 12
-        self.textFixedW      = False
+        self.textFixedW      = True
         self.textWidth       = 600
         self.textMargin      = 40
         self.tabWidth        = 40

nw/gui/dialogs/configeditor.py

@@ -322,8 +322,8 @@ class GuiConfigEditEditor(QWidget):
         self.textFlowForm = QGridLayout(self)
         self.textFlow.setLayout(self.textFlowForm)
 
-        self.textFlowFixed = QCheckBox("Fixed width",self)
-        self.textFlowFixed.setToolTip("Make text in editor fixed width and scale margins instead.")
+        self.textFlowFixed = QCheckBox("Max text width",self)
+        self.textFlowFixed.setToolTip("Maximum width of the text.")
         if self.mainConf.textFixedW:
             self.textFlowFixed.setCheckState(Qt.Checked)
         else:

nw/gui/elements/doceditor.py

@@ -293,8 +293,8 @@ class GuiDocEditor(QTextEdit):
             tW = self.mainConf.textWidth
             wW = self.width()
             tM = int((wW - sW - tW)/2)
-            if tM < 0:
-                tM = 0
+            if tM < self.mainConf.textMargin:
+                tM = self.mainConf.textMargin
             docFormat = self.qDocument.rootFrame().frameFormat()
             docFormat.setLeftMargin(tM)
             docFormat.setRightMargin(tM)