Type keys
From UBot Studio
This command types keys into a specified location in the active window.
Type Keys is a Windows Command.
The command comes with a wizard that allows you to move the mouse over the desired location and select the area by hitting the CTRL button.
Example
plugin command("WindowsCommands.dll", "type keys", "Untitled Bot* - UBot Studio Developer Edition", "HwndWrapper[UBot Studio.exe;;42a8ab89-1ba7-4ef3-b733-f746a51248e3]", 1253, 375, "My Text")
The script, when run, will move to the specifies location and type "My Text".