Interesting that they didn’t use the “ellipsis” character in the menus, preferring to hardcode the three periods. The Human Interface Guidelines were clear to use the single character (which does look different enough in the Chicago font), and these kinds of typographic details (via the MacRoman character set) were key selling points for the Mac early on.
Pascal was very common back then; UCSD Pascal and pCode and Terak boxes were all over the place back in college.
Apple was (then) built on Pascal, and this was markedly different from C on SunOS, ULTRIX VAX and RISC/MIPS, AT&T S3 and SVID,and the early (buggy) VAX C on the odd VMS boxes.
(Java still reminds me of that Pascal and pCode implementation.)
"Pascal was the primary high-level language used for development in the Apple Lisa, and in the early years of the Mac; parts of the original Macintosh operating system were hand-translated into Motorola 68000 assembly language from the Pascal sources. ...the C interface for the Macintosh operating system API had to deal in Pascal data types."
My memory was that C was considered a mainframe and IBM PC language, while the relative elegance and sophistication of Pascal was good style for Macs (esp. when leavened by a bit of assembly code).