« Reply #32 on: Monday 15 August 11 05:16 BST (UK) »
majm,
Thank you for your full and informative replies. I found your explanation and diagrams very interesting.
It is basically a way of NOT leaving a great deal of white space and basically allows for keeping the critical details at a legible scale and the "insignificant" information as small as possible .....
So, my thoughts are that it is a "device" used by the person who made the handwritten chart so that OTHER entries on that chart that were from the same generation are all on the same general "horizontal" area of that chart.
Considering the above quote, it might be helpful to see the full chart.
If your explanation is correct though, it wouldn't seem to indicate a significant lapse of time between marriage of couple and birth of Donald. Perhaps it indicates a lack of significant information in support of Donald's parentage.
(short break which is perhaps akin to the backwards "S" and long break ie "Z" or "N" are both shown)

I agree with you, majm, the short break is akin to the backwards "S", although the break in the chart looks more pronounced and curved (a slanted question mark (?) perhaps).
Talking of breaks. Would the break in the chart indicate a severed relationship?
Liz
Perthshire: MacArthur, Whittet, Mill (Milne), Alexander, Shaw, Pearson, Henderson, Rennie, Comrie, Braid, Ritchie, Roy, MacKillop, Keill, Cumming, Taylor, Marshall, Young, Miller, MacVicar, Murray, Cameron, Croll, Christie, Gloag, Gorrie, Stobbie, Lunnan, Thomson, Crerar, Hepburn.
Dundee: Mill (Milne).
Aberdeen: Mill (Milne).
Skye: MacIntosh, Stewart, MacQueen, Matheson, Morrison, Nicholson, MacLeod, Finlayson.
Peebles: Dickson, Sandilands, Rule, Johnstone.
Edinburgh: Thomson, Sandilands.