Labeling source lines in the sequence number area

The sequence number area can be used to label a source statement line. The content of this area can consist of any character in the character set of the computer.

The sequence number area of a COBOL file is columns 1-6. The identification area spans eight columns starting at Margin R. When you enable the Sequence Number preference, text can be kept in the identification area when you edit a file. You can also choose options that determine how the COBOL Editor manages text in the sequence number and identification areas of your file.

For more information about setting options for sequence number handling, see Enabling sequence number handling
Restriction: Sequence number handling is not available when you edit EBCDIC DBCS code.

Limitations

The basic Eclipse behavior for the following actions was not modified to support the sequence number actions.
  • Snippets View interaction
  • Templates View interaction
  • Typing into the editor in block selection mode when the block selection spans multiple lines
  • Typing onto a line that is a collapsed, folded region
  • Find and Replace with Regular Expressions enabled
  • Dragging and Dropping of Text Selections
  • The Join Lines command (Ctrl+Alt+j)
  • The Move Lines Down command (Alt+down)
  • The Move Lines Up command (Alt+up)
  • The Duplicate Lines command (Ctrl+Alt+up)
Also, for Template Content Assist, Linked Mode is not activated on substitution variables after template insertion.

In the z Systems® LPEX editor, this operation cannot be undone.