Input and output
| dispmsg | 
     Display an error message.
     | 
| fclose | 
     Close the current input, output or error stream.
     | 
| fcopy | 
     Copy a file.
     | 
| feof | 
     Check if the current input stream is at the end of the file.
     | 
| fflush | 
     Flush the current output stream.
     | 
| fgetid | 
     Get the stream number of the current input, output or stream.
     | 
| fgetinfo | 
     Retrieve information about current input, output or error stream.
     | 
| fgets, fgetsl | 
     Read a text string from the current input stream.
     | 
| fmove | 
     Move (rename) a file.
     | 
| fopen | 
     Open a file and select it as the current input/output/error stream.
     | 
| fread | 
     Read a block of data from the current input stream.
     | 
| fremove | 
     Remove (delete) a file.
     | 
| fselect | 
     Select a stream to be the current input, output or error stream.
     | 
| fskip | 
     Skip a block of data from the current input stream.
     | 
| fwrite | 
     Write a block of data to the current output stream.
     | 
| printf | 
     Send a message to the current output stream.
     | 
| setioerrmsg | 
     Set an error message for an IO driver operation.
     | 
 
