A.15.10:4.2 - Leave a usable return when preparation helps

Preserve the contributions that are at risk:

• the result being sought and the current question;
• the method or instruction that governs the unfinished operation, including a condition easily forgotten;
• the last established result and what remains tentative or unfinished;
• the material needed to continue, and where it can be obtained; and
• the next useful operation or open choice, together with a cue that will bring the work back when appropriate.

Keep these in the working material when possible. A short comment beside a calculation may do more than a separate summary. A pointer to a method is useful only if the returning performer can reach and interpret the needed instructions.

Arrange the return cue where it will be encountered: on reopening the work, at the relevant event, or through an agreed reminder. A saved file that the performer will not know to open does not supply that cue. Use a time reminder only when time is the relevant trigger. Avoid copying sensitive material into a reminder when an accessible protected source can supply it.

Choose a pause point with a recoverable distinction between established and unfinished work when circumstances allow. Do not assume that every subtask boundary is equally easy to resume, and do not delay a necessary interruption merely to complete a record.