System-generated elements:
The following Leader elements are usually system generated:
00-04 | Logical record length |
07-08 | Undefined |
09 | Character coding scheme |
10 | Indicator count |
11 | Subfield code length |
12-16 | Base address of data |
18-19 | Undefined |
20-23 | Entry map |
It is common for default values in other Leader elements to be generated automatically as well.