> For the complete documentation index, see [llms.txt](https://docs.enercalc.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.enercalc.com/e3d-user-manual/interface/toc175916526/toc442029162/toc161393990.md).

# Preferences

How to set program preferences such as auto-backup, animation, solver memory, and graphics in ENERCALC 3D.

Settings & Tools > Preferences prompts you with the following dialog.

![](https://560001759-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FWNe8U6EBBBdUJHdb2X9G%2Fuploads%2Fgit-blob-9e30864b04bca66b7661e14c28e38f980bb42f10%2FFASTFR~1_img219.png?alt=media)

The “Automatic file backup period” determines how frequently the model files are saved automatically. Enter 0 for no auto-saves.

Settings for “Response Animation” can be set here. You may activate the Response Animation command from the Analysis Results ribbon after an analysis has been performed successfully.

You have the options to lock the model after analysis is performed successfully. By default, an internal HTML viewer is used to view text and graphical reports.

By default, rubber-banding is enabled while drawing beams, shells or bricks. You may want to disable this feature if your computer graphic card is not fully OpenGL compatible.

Additional settings related to the font for graphics and the spreadsheet appearance are available.

When the sparse solver is used for static analysis, you may choose an out-of-core approach so computer memory usage is minimized. You may specify the maximum amount of memory to be used in the out-of-core sparse solver. This value should be smaller than the physical memory available in your system.

Preferences are always saved for future use.


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