tweaks: move 'set indicator' to its alphabetical place in the manual

Also, reword some option descriptions, to mention the effect of the
option instead of what the user should give as argument.

doc/nano.texi

@@ -878,6 +878,11 @@ text.  (The color of the stripe can be changed with @code{set stripecolor}.)
 Save the last hundred search strings and replacement strings and
 executed commands, so they can be easily reused in later sessions.
 
+@item set indicator
+Display a "scrollbar" on the righthand side of the edit window.
+It shows the position of the viewport in the buffer
+and how much of the buffer is covered by the viewport.
+
 @item set jumpyscrolling
 Scroll the buffer contents per half-screen instead of per line.
 
@@ -951,14 +956,9 @@ The cursor position is remembered for the 200 most-recently edited files.
 @item set preserve
 Preserve the XON and XOFF keys (@kbd{^Q} and @kbd{^S}).
 
-@item set indicator
-Display a "scrollbar" on the righthand side of the edit window.
-It shows the position of the viewport in the buffer
-and how much of the buffer is covered by the viewport.
-
 @item set promptcolor [bold,][italic,]@var{fgcolor},@var{bgcolor}
 Use this color combination for the prompt bar.
-When this option is not specified, the colors of the title bar are used.
+(When this option is not specified, the colors of the title bar are used.)
 @xref{@code{set functioncolor}} for valid color names.
 
 @item set punct "@var{characters}"

doc/nanorc.5

@@ -138,7 +138,7 @@ point to vary along with the width of the screen if the screen is resized.
 The default value is \fB\-8\fR.
 .TP
 .B set functioncolor \fR[\fBbold,\fR][\fBitalic,\fR]\fIfgcolor\fB,\fIbgcolor\fR
-Specify the color combination to use for the function descriptions
+Use this color combination for the concise function descriptions
 in the two help lines at the bottom of the screen.
 See \fBset titlecolor\fR for more details.
 .TP
@@ -159,7 +159,7 @@ and how much of the buffer is covered by the viewport.
 Scroll the buffer contents per half-screen instead of per line.
 .TP
 .B set keycolor \fR[\fBbold,\fR][\fBitalic,\fR]\fIfgcolor\fB,\fIbgcolor\fR
-Specify the color combination to use for the shortcut key combos
+Use this color combination for the shortcut key combos
 in the two help lines at the bottom of the screen.
 See \fBset titlecolor\fR for more details.
 .TP
@@ -214,7 +214,7 @@ Deprecated option since it has become the default setting.
 When needed, use \fBunset breaklonglines\fR instead.
 .TP
 .B set numbercolor \fR[\fBbold,\fR][\fBitalic,\fR]\fIfgcolor\fB,\fIbgcolor\fR
-Specify the color combination to use for line numbers.
+Use this color combination for line numbers.
 See \fBset titlecolor\fR for more details.
 .TP
 .B set operatingdir "\fIdirectory\fP"
@@ -231,8 +231,8 @@ The cursor position is remembered for the 200 most-recently edited files.
 Preserve the XON and XOFF keys (\fB^Q\fR and \fB^S\fR).
 .TP
 .B set promptcolor \fR[\fBbold,\fR][\fBitalic,\fR]\fIfgcolor\fB,\fIbgcolor\fR
-Specify the color combination to use for the prompt bar.
+Use this color combination for the prompt bar.
-When this option is not specified, the colors of the title bar are used.
+(When this option is not specified, the colors of the title bar are used.)
 See \fBset titlecolor\fR for more details.
 .TP
 .BI "set punct """ characters """
@@ -272,13 +272,13 @@ Save a changed buffer automatically on exit (\fB^X\fR); don't prompt.
 (The old form of this option, \fBset tempfile\fR, is deprecated.)
 .TP
 .B set scrollercolor \fIfgcolor\fB,\fIbgcolor\fR
-Specify the color combination to use for the indicator alias "scrollbar".
+Use this color combination for the indicator alias "scrollbar".
 (On terminal emulators that link to a libvte older than version 0.55,
 using a background color here does not work correctly.)
 See \fBset titlecolor\fR for more details.
 .TP
 .B set selectedcolor \fR[\fBbold,\fR][\fBitalic,\fR]\fIfgcolor\fB,\fIbgcolor\fR
-Specify the color combination to use for selected text.
+Use this color combination for selected text.
 See \fBset titlecolor\fR for more details.
 .TP
 .B set showcursor
@@ -314,11 +314,11 @@ When the buffer is modified, a star (\fB*\fR) is shown after the
 filename in the center of the title bar.
 .TP
 .B set  statuscolor \fR[\fBbold,\fR][\fBitalic,\fR]\fIfgcolor\fB,\fIbgcolor\fR
-Specify the color combination to use for the status bar.
+Use this color combination for the status bar.
 See \fBset titlecolor\fR for more details.
 .TP
 .B set stripecolor \fR[\fBbold,\fR][\fBitalic,\fR]\fIfgcolor\fB,\fIbgcolor\fR
-Specify the color combination to use for the vertical guiding stripe.
+Use this color combination for the vertical guiding stripe.
 See \fBset titlecolor\fR for more details.
 .TP
 .B set suspendable
@@ -332,7 +332,7 @@ greater than 0.  The default value is \fB8\fR.
 Convert typed tabs to spaces.
 .TP
 .B set titlecolor \fR[\fBbold,\fR][\fBitalic,\fR]\fIfgcolor\fB,\fIbgcolor\fR
-Specify the color combination to use for the title bar.
+Use this color combination for the title bar.
 Valid names for the foreground and background colors are:
 .BR red ", " green ", " blue ", " magenta ", " yellow ", " cyan ", "
 .BR white ", and " black .