101. Occasionally a word assumes in a phrase a form different from that which it takes when it stands alone. Uniformity of outline (in general highly desirable) is in these cases departed from in order to accomplish one or more of the following-named purposes: First, to promote brevity by writing certain words much more briefly under phrasing laws than they could be written if standing alone; second, to promote legibility by distinctions of outline between words which, if written alike, might be confounded; third, to secure facile junctions where, if ordinary word-forms were adhered to, junctions would be difficult or impossible.

102. The variations of outline which take place in the accomplishment of the objects just named may be classified as follows: