Various updates and improvements

main/editing/man-structured-geometry.en.tm

@@ -41,7 +41,8 @@
     alignment) to the defaults.
 
     <item*|<shortcut|(geometry-circulate #t)>, <shortcut|(geometry-circulate
-    #f)>>Circulate among available length units for specifying the geometry.
+    #f)>>Circulate among the available length units for specifying the
+    geometry.
 
     <item*|<shortcut|(geometry-slower)>, <shortcut|(geometry-faster)>>Decrease
     or increase the step size when positioning or resizing.

main/editing/man-structured-variants.en.tm

@@ -1,6 +1,6 @@
 <TeXmacs|1.99.5>
 
-<style|<tuple|tmdoc|english>>
+<style|<tuple|tmdoc|english|pari>>
 
 <\body>
   <tmdoc-title|Structured variants>
@@ -42,6 +42,25 @@
   (focus-tree) #t)> allows you to cycle between the available kinds of list
   items (bullets, dashes, arrows, <abbr|etc.>).
 
+  Folding and unfolding provides yet another example of an interesting way to
+  toggle between several environments. Inside a computer algebra session such
+  as
+
+  <\session|pari|default>
+    <\unfolded-io|Pari] >
+      factor (x^15 - 1)
+    <|unfolded-io>
+      <with|color|magenta|%1 = <math|<with|color|blue|<matrix|<tformat|<table|<row|<cell|x-1>|<cell|1>>|<row|<cell|x<rsup|2>+x+1>|<cell|1>>|<row|<cell|x<rsup|4>+x<rsup|3>+x<rsup|2>+x+1>|<cell|1>>|<row|<cell|x<rsup|8>-x<rsup|7>+x<rsup|5>-x<rsup|4>+x<rsup|3>-x+1>|<cell|1>>>>>>>>
+    </unfolded-io>
+  </session>
+
+  you may click on \P<verbatim|<with|color|dark brown|Pari]>>\Q in order to
+  fold the output (only the input remains visible) and click once again in
+  order to unfold back to the original state. The <shortcut|(alternate-toggle
+  (focus-tree))> shortcut achieves the same effect. There various other
+  foldable environments, most of which are available through
+  <menu|Insert|Fold>.
+
   <tmdoc-copyright|1998--2005|Joris van der Hoeven>
 
   <tmdoc-license|Permission is granted to copy, distribute and/or modify this

main/editing/man-versioning.en.tm

@@ -31,7 +31,7 @@
   still be named <verbatim|new.tm>, and the changes between both versions
   will be indicated by special markup. If there are any changes, then the
   cursor will be positioned at the first difference. In a similar way, you
-  may compare the current buffer to a<nbsp>newer version on disk using
+  may compare the current buffer with a<nbsp>newer version on disk using
   <menu|Version|Compare|With newer version>.
 
   It is possible to go through all the differences between the old and new
@@ -114,8 +114,8 @@
   a lemma. Nevertheless, if we want to compare the inside texts, we may turn
   the old theorem into a lemma and then reactualize.
 
-  <paragraph*|Using external programs for version control such as
-  <name|Subversion>>
+  <paragraph*|Using external programs such as <name|Subversion> for version
+  control>
 
   If the file you are editing belongs to a directory that is under version
   control (only <name|Subversion> is currently supported, although other
@@ -136,7 +136,7 @@
   a small explanatory message about the changes that you have made. A file
   that is not yet under version control can be added to the version control
   system using <menu|Version|Register>. Registering a file does <em|not>
-  commit it to the repository; you still have to use <menu|Version|Commit> in
+  commit it to the repository: you still have to use <menu|Version|Commit> in
   order to do so.
 
   If, while you were editing, changes to the file were made in the