Even so, https://sourceware.org/binutils/docs/as/PDP_002d11_002dPseudos.html. 9....

IncRnd on March 11, 2021 | parent | context | favorite | on: Dennis Ritchie’s first C compiler (c. 1972)

Even so, https://sourceware.org/binutils/docs/as/PDP_002d11_002dPseud....

  9.34.2 Assembler Directives
  The PDP-11 version of as has a few machine dependent
  assembler directives.
  
  .bss
  Switch to the bss section.

  ...