doc updates (graph resize, commands to select/resize objects)

doc/xschem_man/commands.html

@@ -235,7 +235,39 @@ set replace_key(Shift-W) w
 set replace_key(w) Shift-W
  </pre><br>
 
-
+ <a id="select"><h3>SELECT OBJECTS</h3></a>
+ <p>
+  Objects can be selected by clicking the left mouse button when the pointer is very close to the object.
+  For rectangle objects the best point to select it is the internal side, close to one of the corners.
+  More objects can be selected by pressing the <kbd>Shift</kbd> key and clicking another object.
+  Once objects are selected they can be copied (<kbd>c</kbd> key), moved (<kbd>m</kbd> key), deleted
+  (<kbd>Delete</kbd> key) or attributes changed (<kbd>q</kbd> key).<br>
+  Objects can also be selected by area, by dragging with the left mouse button pressed a rectangle around the objects 
+  you want to select.
+ </p>
+ <img src="commands9.png">
+ <a id="resize"><h3>RESIZE OBJECTS</h3></a>
+ <p>
+  All Xschem base objects can be resized.
+  For lines, rectangles, polygons you need to drag the mouse with left button pressed and Ctrl key pressed 
+  over one vertex/endpoint.
+ </p>
+ <img src="commands6.png">
+ <p>
+  After releasing the mouse button the object will become selected
+  and a subsequent move operation (<kbd>m</kbd> key) will move the selected vertex/endpoint.
+ </p>
+ <img src="commands7.png">
+ <p>
+  More objects can be rezized. You can add vertex/endpoints by pressing Ctrl and Shift and dragging the mouse 
+  to enclose another vertex/endpoint. After selecting all desired elements pressing the <kbd>m</kbd> key
+  will resize all objects.
+ </p>
+ <img src="commands8.png">
+ <p>
+  Circles can be resized as well. Capture the center of the circle with the above described mouse drag operation, the radius can be changed.
+  For arcs you can capture the center (to modify the radius) or the endpoints to change the start/end angle or the arc angle.
+ </p>
  <h3>STRETCH OPERATIONS</h3>
  <p>
   An important operation that deserves a special paragraph is the <kbd>Stretch</kbd> operation.

doc/xschem_man/graphs.html

@@ -46,8 +46,17 @@ p{padding: 15px  30px 10px;}
  <a id="graphs"><h2>Using XSCHEM's internal graph functions</h2></a>
  <p>
   Xschem can now display waveforms by itself in the drawing area. in the Simulation menu there is an entry to
-  add a graph: <kbd>Add waveform graph</kbd>. When this menu is pressed a box can be placed in the schematic:<br>
+  add a graph: <kbd>Add waveform graph</kbd>. When this menu is pressed a box can be placed in the schematic:
-  <img src="graphs06.png"><br>
+ </p>
+ <img src="graphs06.png">
+ <p class="important">
+  Xschem graphs are embedded into a rectangle object. Resizing graphs is done in the same way as resizing 
+  a rectangle object. See the <a href="commands.html#resize">related page</a>.
+  To select a graph (to delete it or move it to a different position) click the left mouse button while in the area
+  shown in this picture:
+ </p>
+ <img src="graphs16.png">
+ <p>
   The next step is loading the simulation data, This is done by menu
   <kbd>Simulation-&gt;Load/Unload ngspice .raw file</kbd>. This command loads a .raw file produced by a ngspice/Xyce
   simulation. The file name is expected to be <kbd>circuit.raw</kbd> where