Use this command to determine whether you are at the end of a file. This is useful when you are reading in a file and want to know if you have finished reading all the contents or gotten to the end.
readXXXX commands performed when at the end of a file will fail, causing your script to fail, so it is good practice to call this command often when reading a file.
|int||ID of file previously opened with fileOpen|
// Obtain file ID earlier do some operation to the file
while( `isEndOfFile` == false )
// Read in something