The BLANK specifier indicates how blanks are interpreted in a file. It takes the following form:
|'NULL'||Indicates all blanks are ignored, except for an all-blank field (which has a value of zero).|
|'ZERO'||Indicates all blanks (other than leading blanks) are treated as zeros.|
The default is 'NULL' (for explicitly OPENed files, preconnected files, and internal files). If you specify compiler option F66 (or OPTIONS/NOF77), the default is 'ZERO'. For the correct form of this option, see your user manual or programmer's guide.
If the BN or BZ edit descriptors are specified for a formatted input statement, they supersede the default interpretation of blanks.
For More Information:
For details on the BN and BZ edit descriptors, see Section 11.3.4.