+
+def HelpDialog():
+ MessageDialogHelper(
+ type=gtk.MESSAGE_INFO,
+ buttons=gtk.BUTTONS_CLOSE,
+ title='Help',
+ markup="""\
+<b>Usage Tips</b>
+
+<u>Add block</u>: drag and drop or double click a block in the block selection window.
+<u>Rotate block</u>: Select a block, press left/right on the keyboard.
+<u>Change type</u>: Select a block, press up/down on the keyboard.
+<u>Edit parameters</u>: double click on a block in the flow graph.
+<u>Make connection</u>: click on the source port of one block, then click on the sink port of another block.
+<u>Remove connection</u>: select the connection and press delete, or drag the connection.
+
+* See the menu for other keyboard shortcuts.""")