Blockly: include multiselect feature in the sidebar doc

openhab/openhab-webui#2419

Signed-off-by: Jimmy Tanagra <jcode@tanagra.id.au>

mainui/settings/blockly-editor.md

@@ -8,29 +8,42 @@ title: Blockly Editor
 <!-- START MAINUI SIDEBAR DOC - DO NOT REMOVE -->
 The Blockly editor is used to create automation using Blockly.
 
-## Keyboard Shortcuts
+## Mouse & Keyboard Tips
 
 The following is a short overview of the most important keyboard shortcuts.
 
 Mac users should use <kbd>Cmd</kbd> instead of <kbd>Ctrl</kbd> for most shortcuts.
 
+Panning & Zooming:
+
+- <kbd>Click+Drag</kbd>, <kbd>Scroll Wheel</kbd> (mouse), or <kbd>Two Fingers</kbd> (trackpad) to pan around.
+- <kbd>Ctrl+Scroll Wheel</kbd> or <kbd>Ctrl+Two Fingers</kdb> to zoom in and out.
+
 Selection:
 
 - Click a block to select it.
+- <kbd>Shift+Click</kbd> or <kbd>Shift+Drag</kbd>: Select multiple blocks.
+- <kbd>Ctrl+A</kbd>: Select all blocks.
+- Clicking on an empty area deselects everything.
 
-Deleting a block:
+Deleting Blocks:
 
-- Once selected, it can be deleted with the <kbd>Delete</kbd> key.
-- Alternatively the block can be dragged into the toolbox area to delete it.
+- <kbd>Delete</kbd>: Delete the selected blocks.
+- Alternatively, the blocks can be deleted by dragging them into the toolbox area.
 
 Copy & Paste:
 
-- <kbd>Ctrl+C</kbd>: Copy the selected block.
-- <kbd>Ctrl+X</kbd>: Cut selected block.
+- <kbd>Ctrl+C</kbd>: Copy the selected blocks.
+- <kbd>Ctrl+X</kbd>: Cut selected blocks.
 - <kbd>Ctrl+V</kbd>: Paste what has been copied.
+- Blocks can be pasted into another Blockly script in a different browser window/tab.
 
 Redo & Undo:
 
 - <kbd>Ctrl+Z</kbd>: Undo the last change.
 - <kbd>Ctrl+Y</kbd> (<kbd>Shift+Cmd+Z</kbd> on Mac): Redo the last change.
+
+Commenting:
+
+- Right click on the block and select <kbd>Add Comment</kbd>
 <!-- END MAINUI SIDEBAR DOC - DO NOT REMOVE -->