place separate keys to the left of each row of a trellis
Each key is created and then inserted into a single grob.
legendGrob2wt(...)
... |
key1, key2, etc. Each key will normally be the result of
a |
A Grid frame object (that inherits from 'grob').
Richard M. Heiberger, with asssistance from Deepayan Sarkar.
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