VBScript   → Lua   This function checks if the current caller (i.e. his phone number) can be found in a given text file. It can be used to create black or white lists for incoming calls on a user. Please see the Introduction chapter for some usage instructions.   ' FileOpen iomode Values Const fsoForReading = 1 ' Open a file for reading only. Const fsoForWriting = 2 ' Open a file for writing only. Const fsoForAppending = 8 ' Open