Maple language files, which are typically saved with the file extension .mpl, can now be opened directly in Maple's standard interface using the File > Open menu.
The file opens in a code editor window. From that window, you can view, edit, execute, and save the file. The window has many features of Maple's code editor, including syntax highlighting, syntax templates, command completion, line numbers, and automatic indenting.
When an MPL file is attached to a Maple workbook, double-clicking on the file in the workbook navigator now opens the file directly in Maple.