The following commands deal with complete REDUCE files that do not necessarily constitute complete programs.
Read a file name from the minibuffer and input the file into a REDUCE process. It asks you whether you want the input echoed.
Read a file name from the minibuffer and compile it into a fast-loading (“fasl”) file, for which it prompts for the name with the source file name as default. It asks you whether you want the input echoed.
Read a REDUCE package name from the minibuffer and load it into a REDUCE process. The read process uses completion based on the files in the REDUCE package directory specified by the variable reduce-packages-directory, which should automatically be set correctly when REDUCE run mode loads. Pressing the tab key should list the packages available, from which you can select in the usual way, such as by clicking on a package name with the mouse.