WinSendKeys is not a hotkey program in itself, it's a command-line program to send a sequence of 1 or more keystrokes to another application.
It's main use-case (for me) is another of my tools,
WinButtons, that provides on-screen buttons, optionally 'placed' on a touch-screen, to control applications that have a bunch of features kinda hidden behind (user-defined or not) hotkeys, that would be more easily controlled with a separate window of buttons, that can also hold text and/or an image stating it's function.
You can also create shortcuts anywhere (desktop, quick launch bar?) that sends a sequence of keys to an application, and optionally starts the application for you, if it's not already running. You can even assign a system-wide hotkey to that action
Yes, documentation is rather technical, but there have been very few requests lately about this tool, so I've assumed everybody is happy...