Complex sentence: Pico does not support working with several files simultaneously, and consequently cannot perform a find and replace across multiple files or copy text from one file to another (though it is possible to read text into the editor from a file in its working directory).
Split into simpler sentences: Pico does not support working with several files simultaneously and cannot perform a find and replace across multiple files. It also cannot copy text from one file to another (though it is possible to read text into the editor from a file in its working directory).