Planetary Data System
Engineering Node

PDS3 Standards: Individual Issue

SCR 3-1071: Use of Format Effectors Within Attribute Assignment Statements

Priority: high

Problem Summary: Section 12.3.5 of the Standards Reference states, "ODL is a simple language and it is usually clear where one lexical element ends and another begins. Spacing characters or format effectors may appear before a lexical element, between any pair of lexical elements, or after a lexical element without changing the meaning of a statement." ODL does not contain statement delimiters. Without these, while it may be simple for humans to recognize the end of one statement and the beginning of the next, it is not as simple to write code to recognize this. This SCR proposes placing more restrictions on the use of format effectors within statements in order to facilitate software based validation.

Working group: E. Rye (lead) P. Ramirez

Originator: E. Rye

Standards Change Request:

Version Date Author(s) Format Note
1 2006-07-23 E. Rye DOC


Supplementary Material:


Status Task ResponsibleParty Response
SUBMITTED 2006-07-23
IN_PROGRESS 2006-07-23
DRAFT 2006-07-23
WITHDRAWN 2007-03-07


Vote to RECOMMEND version 1 of the SCR for a Management Council vote.

Node Representative Version 1
ATM Lyle Huber no
EN Steve Hughes1 abstain
GEO Susie Slavney yes
IMG Patty Garcia yes
NAIF Boris Semenov no
PPI Todd King no
RINGS Mitch Gordon no
RS Dick Simpson2 no
SBN Anne Raugh no
1needs further discussion 2

reserves the right to change if a compelling case for "no" is submitted