The current RPI release supports the processing of delimited and fixed-width files. RPI attempts to determine the nature of a file during file analysis. Checks are undertaken in the following sequence:
1. If all lines are the same length, and noticeable spacing patterns (at least 50% of lines have a minimum of one common space) are present, the file is deemed to be fixed-width.
2. If the file can be parsed as delimited, it is defined as such.
3. If the file has variable line lengths, but also contains noticeable spacing patterns, it is determined to be fixed width.