General Operations - Cinderella Documentation
Description: The user's guide to the Interactive Geometry Software Cinderella

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# General Operations

## General Tools

### File Operations

The file operations are rather standard and similar to corresponding operations in other programs. Constructions are stored in a special file format. The construction files have the extension `.cdy`.

- New: Opens a new and empty construction window.
- Load: Loads a construction.
- Save: Prompts for a filename if needed and saves the construction.
- Save As: Prompts for a new filename and saves the construction.

##### Export Tools

- Export to HTML: This operation automatically generates an interactive HTML page.
- Print All Views: Prints all currently open views. This operation makes use of the Java printing routines. The output is inferior to the output produced using the "Print PDF" command of a view, due to the limits of the Java printing interface. If you have the facilities to print and preview PDF files, it is much better to use this print format.

##### Undo/Redo/Delete

- Undo: This operation undoes the last performed action. You can undo as many consecutive operations as you want. The following actions are undoable:
- Construction steps
- Movements
- Appearance changes
- Zooming, translating, and rotating views
- Deletion of elements
- Redo: Redoes the last undo operation. You can redo as many consecutive undo operations as you want.
- Delete: Deletes all selected elements and all elements that depend on them. If you delete elements by accident, just use "Undo" to restore them.

### Selection Tools

- Select All: Selects all geometric elements.
- Select Points: Selects all points.
- Select Lines: Selects all lines.
- Select Conics: Selects all conics and circles.
- Deselect: Clears the current selection.