Attribute: Category of navigation line

Acronym: CATNAV

Code: 41

Attribute Type: E

Expected input:

ID	Meaning	INT 1	S-4
`1`	`clearing line`	`IM 2`	`433;`
`2`	`transit line`	`IM 2`
`3`	`leading line bearing a recommended track`	`IM 1, 3`	`433`

Remarks: No remarks.

Object Classes that use CATNAV