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<HTML>
<HEAD>
<TITLE> Basic Operation </TITLE>
</HEAD>
<BODY>
<A NAME="Using_the_Mouse"></A>
<H2> Using the Mouse </H2>
<P>
Mouse-based editing is what NEdit is all about, and learning to use the more
advanced features like secondary selections and primary selection dragging
will be well worth your while.
</P><P>
If you don't have time to learn everything, you can get by adequately with
just the left mouse button:  Clicking the left button moves the cursor.
Dragging with the left button makes a selection.  Holding the shift key while
clicking extends the existing selection, or begins a selection between the
cursor and the mouse.  Double or triple clicking selects a whole word or a
whole line.
</P><P>
This section will make more sense if you also read the section called,
"<A HREF="select.html#Selecting_Text">Selecting Text</A>", which explains the terminology of selections, that is,
what is meant by primary, secondary, rectangular, etc.
</P><P>
<H3>Button and Modifier Key Summary</H3>
</P><P>
General meaning of mouse buttons and modifier keys:
</P><P>
<H4>  Buttons</H4>
</P><P>
<PRE>
      Button 1 (left)    Cursor position and primary selection
</PRE>
</P><P>
<PRE>
      Button 2 (middle)  Secondary selections, and dragging and
                         copying the primary selection
</PRE>
</P><P>
<PRE>
      Button 3 (right)   Quick-access programmable menu and pan
                         scrolling
</PRE>
</P><P>
<H4>  Modifier keys</H4>
</P><P>
<PRE>
      Shift   On primary selections, (left mouse button):
                 Extends selection to the mouse pointer
              On secondary and copy operations, (middle):
                 Toggles between move and copy
</PRE>
</P><P>
<PRE>
      Ctrl    Makes selection rectangular or insertion
              columnar
</PRE>
</P><P>
<PRE>
      Alt*    (on release) Exchange primary and secondary
              selections.
</PRE>
</P><P>
<H3>Left Mouse Button</H3>
</P><P>
The left mouse button is used to position the cursor and to make primary
selections.
</P><P>
<PRE>
    Click         Moves the cursor
</PRE>
</P><P>
<PRE>
    Double Click  Selects a whole word
</PRE>
</P><P>
<PRE>
    Triple Click  Selects a whole line
</PRE>
</P><P>
<PRE>
    Quad Click    Selects the whole file
</PRE>
</P><P>
<PRE>
    Shift Click   Adjusts (extends or shrinks) the
                  selection, or if there is no existing
                  selection, begins a new selection
                  between the cursor and the mouse.
</PRE>
</P><P>
<PRE>
    Ctrl+Shift+   Adjusts (extends or shrinks) the
    Click         selection rectangularly.
</PRE>
</P><P>
<PRE>
    Drag          Selects text between where the mouse
                  was pressed and where it was released.
</PRE>
</P><P>
<PRE>
    Ctrl+Drag     Selects rectangle between where the
                  mouse was pressed and where it was
                  released.
</PRE>
</P><P>
<H3>Right Mouse Button</H3>
</P><P>
The right mouse button posts a programmable menu for frequently used commands.
</P><P>
<PRE>
    Click/Drag    Pops up the background menu (programmed
                  from Preferences -&#62; Default Settings -&#62;
                  Customize Menus -&#62; Window Background).
</PRE>
</P><P>
<PRE>
    Ctrl+Drag     Pan scrolling.  Scrolls the window
                  both vertically and horizontally, as if
                  you had grabbed it with your mouse.
</PRE>
</P><P>
<H3>Middle Mouse Button</H3>
</P><P>
The middle mouse button is for making secondary selections, and copying and
dragging the primary selection.
</P><P>
<PRE>
    Click         Copies the primary selection to the
                  clicked position.
</PRE>
</P><P>
<PRE>
    Shift+Click   Moves the primary selection to the
                  clicked position, deleting it from its
                  original position.
</PRE>
</P><P>
<PRE>
    Drag          1) Outside of the primary selection:
                      Begins a secondary selection.
                  2) Inside of the primary selection:
                      Moves the selection by dragging.
</PRE>
</P><P>
<PRE>
    Ctrl+Drag     1) Outside of the primary selection:
                      Begins a rectangular secondary
                      selection.
                  2) Inside of the primary selection:
                      Drags the selection in overlay
                      mode (see below).
</PRE>
</P><P>
When the mouse button is released after creating a secondary selection:
</P><P>
<PRE>
    No Modifiers  If there is a primary selection,
                  replaces it with the secondary
                  selection.  Otherwise, inserts the
                  secondary selection at the cursor
                  position.
</PRE>
</P><P>
<PRE>
    Shift         Move the secondary selection, deleting
                  it from its original position.  If
                  there is a primary selection, the move
                  will replace the primary selection
                  with the secondary selection.
                  Otherwise, moves the secondary
                  selection to the cursor position.
</PRE>
</P><P>
<PRE>
    Alt*          Exchange the primary and secondary
                  selections.
</PRE>
</P><P>
While moving the primary selection by dragging with the middle mouse button:
</P><P>
<PRE>
    Shift         Leaves a copy of the original
                  selection in place rather than
                  removing it or blanking the area.
</PRE>
</P><P>
<PRE>
    Ctrl          Changes from insert mode to overlay
                  mode (see below).
</PRE>
</P><P>
<PRE>
    Escape        Cancels drag in progress.
</PRE>
</P><P>
Overlay Mode: Normally, dragging moves text by removing it from the selected
position at the start of the drag, and inserting it at a new position
relative to the mouse. When you drag a block of text over existing
characters, the existing characters are displaced to the end of the
selection.  In overlay mode, characters which are occluded by blocks of text
being dragged are simply removed.  When dragging non-rectangular selections,
overlay mode also converts the selection to rectangular form, allowing it to
be dragged outside of the bounds of the existing text.
</P><P>
Mouse buttons 4 and 5 are usually represented by a mouse wheel nowadays.
They are used to scroll up or down in the text window.
</P><P>
* The Alt key may be labeled Meta or Compose-Character on some keyboards.
Some window managers, including default configurations of mwm, bind
combinations of the Alt key and mouse buttons to window manager operations.
In NEdit, Alt is only used on button release, so regardless of the window
manager bindings for Alt-modified mouse buttons, you can still do the
corresponding NEdit operation by using the Alt key AFTER the initial mouse
press, so that Alt is held while you release the mouse button.  If you find
this difficult or annoying, you can re-configure most window managers to skip
this binding, or you can re-configure NEdit to use a different key
combination.
<P><HR>
</P><P>
</P>
</BODY>
</HTML>