keyword Definition
Words that are reserved for implementing syntax in files used as
inputs to the
Quartus® Prime software. Such files include AHDL
Text Design Files (.tdf), VHDL Design Files (.vhd),
Verilog Design Files (.v),
Quartus® Prime Project Files
(.qpf), and
Quartus® Prime Settings Files (.qsf).
For example, the keyword OF
is reserved in AHDL files,
and therefore cannot be used as an unquoted symbolic name in an TDF
File.