Defines a custom prompt function that replaces the $Home part of the current path with '~', displays the time, current path, git status, and .NET version in the current project file, and sets the window title to the current folder name. The prompt also displays a different prompt character ('>' or '>>') depending on the current nested prompt level and whether there was an error in the previous command.
The Find-File function takes a FileName parameter and searches the current directory and all subdirectories for files with that name. It returns an array of System.IO.FileInfo objects representing the matching files.
The Open-File function is used to open files in an external editor. It has two ways to input a file: by pipeline or by filename. If a FileInfo object is piped in, it will be opened in the default editor. If a filename is provided, it will be opened in the specified editor (C:\Program Files\EditPlus\editplus.exe by default). It accepts an optional $Index parameter that can be used to open multiple files by index.