- TEXTIO defines a LINE data type
- All read and write operations use the LINE type
- TEXTIO also defines a FILE type of TEXT for use with ASCII text
- Procedures defined by TEXTIO are:
- READLINE(f, k)
- reads a line of file f and places it in buffer k
- READ(k, v,...)
- reads a value of v of its type from k
- WRITE(k, v,...)
- WRITELINE(f, k)
- ENDFILE(f) returns TRUE at the end of FILE