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History Text Width  

The text stored in history records may have any width (or line length) ranging from 1 to NDF__SZHMX[*] characters, but all the lines of text associated with a given record have the same width (i.e. the same upper limit on the number of characters they may contain). This width is determined when the first line of text is written to the record.

If the first line of text in a history record is written by the NDF_ system itself (when writing default history information, for instance), then the text width for that record will be initialised to NDF__SZHIS[*] characters. This is the recommended width for history text. However, if the NDF_HPUT routine writes the first line, then the text width will be determined by the length of each element of the TEXT array supplied to it, as returned by the Fortran intrinsic LEN function. An error will result if this is too long (i.e. exceeds NDF__SZHMX).



next up previous
Next: Formatting Options for History Text
Up: THE HISTORY COMPONENT
Previous: Using Message Tokens in History Text


Starlink User Note 33
R.F. Warren-Smith
11th January 2000
E-mail:rfws@star.rl.ac.uk

Copyright © 2000 Council for the Central Laboratory of the Research Councils