Tcl Script File (.tcl) Definition

An ASCII text file (with the extension .tcl) that contains importable Tcl code or an executable Tcl script.

Tcl, an abbreviation of the name "Tool Command Language", is a scripting language for controlling and extending software applications. A .tcl file contains a Tcl script, which is composed of Tcl functions and can also include Intel® Quartus® Prime Application Programming Interface (API) functions used as commands.

You can run Tcl scripts at a command line, in the Intel® Quartus® Prime Tcl Console window, with the Tcl Scripts command on the Tools menu, or as tasks in the Tasks window.