History 1.
A History of the Development of the Laban Notation System
(Hutchinson Guest 1995, p56)
39.14 Time Significance in Hook Placement
Originally a hook attached to a gesture or a support symbol modified the whole sign, thus placement did not have to be exact. This can be seen in 39r taken from Laban 1956; the same was used in AHG 1954. Knust established that the hook had time significance, 39s, thus the moment of contact could be add at the beginning (a), the middle (b) or at the end (c) of the gesture. This rule also applied to hooks on sliding gestures; adopted by ICKL in 1963 the rule brought with it the need to distinguish between unit timing and specific timing.