Edit

Undo and Redo

allow you to step back and forward in your editing history. If you undo a few edits, and then change the model at that point, the undo history is then reset to commence with your new edit. Ravel supports the standard Windows shortcuts of control-Z for undo and control-Y for redo.

Cut/copy/paste

Selecting, or lassoing a region of the canvas will select a group of icons, which will be shaded to indicate the selected items. Wires joining two selected items will also be selected. Note that, compatible with X-windows, selecting automatically performs a copy, so the copy operation is strictly redundant, but provided for users familiar with systems where an explicit copy request is required. Cut deletes the selected items. Paste will paste the items in the clipboard as a Group into the current model. Ravel supports the Windows-standard shortcut keys of control-C for copy, control-X for cut (which deletes the entity at the current location and creates a copy for pasting elsewhere) and control-V for paste.

Group selection

Create a Group using the contents of the selection. Groups allow you to organise more complicated systems components into aggregated modules that make the overall system more comprehensible. In Ravel, groups can be used to, for example, collect all the file importing operations into a Group, thus removing the details of these operations from the top level view. This reduces the complexity of a canvas, which can make it easier for both the developer and viewers to focus on the analysis that the document is actually doing.

Dimensions

This invokes the Dimensions dialog box, which lists the Dimensions (Ravel axes) in a document, their type (string, time, value), and their units or formatting.

Remove Units

removes all units from the system, effectively disably dimensional analysis.

Auto Layout and Random Layout

change the layout of your model. These commands are still under development, so are currently not recommended unless you have all items sitting on top of each other. If you do accidently select one of these commands and mess up your model layout, simply press ``undo''.