Very often an text from another patent must be inserted into a patent application, almost verbatim. This practice would equal an implicit admission of a prior art anticipating (rendering non-novel) the application, had the application not used this standard verbiage
The …which is incorporated by reference for all purposes as if fully set forth herein
Very often the language of the technical description within the patent application must be technically correct, though not necessarily precise in engineering terms, while enabling, by teaching a literate technical person to manufacture the invention:
The angular divergence of gimbal roll axis 64 from platform roll axis 68 in Figures 3A-3C has been exaggerated for illustrational clarity.
the line drawings in patent submissions may be surprisingly simple, sometimes hand-drawn, though neat, in their black-and-white monotony. They do not need to be precise, nor truly representative. A propeller blade, the turboprop engine and the unique hub may look as if drawn by a tidy elementary school pupil.
More of the cautionary, self-protective CYA verbiage:
It is to be understood that the...descriptions below are illustrative, and are not intended to…
does not restrict the present invention to the specific details set forth below…
It will be recognized by those with skill in the art that…
...known in the art
At the end of the introductory section, there must be an formula that proves the application's compliance with the US Patent laws' Paragraph 101, that the invention is presents a solution to the public need due to the disadvantages of the existing prior art:
...a widely recognized need for... which would overcome the disadvantages of presently known
Isn't it easy?
