Assertion: catwalk | /r/HasProperty | placed upstage of the proscenium
Facets:
value: as part of the fly system
type: MANNER
Source sentences:
text: A catwalk may also be placed upstage of the proscenium as part of the fly system.
text: A catwalk may also be placed upstage of the proscenium as part of the fly system.