---

- name: divergence
  tag: divergence
  match: "."
  replace:
  - test:
      if: "$Verbosity='Verbose'"
      then: [t: "divergence"]      # phrase('divergence' from the mean)
      else: [t: "div"]      # phrase('divergence' from the mean)
  - t: "of"      # phrase(systems 'of' linear equations)
  - test:
      if: "not(IsNode(*[1], 'leaf'))"
      then: [pause: short]
  - x: "*[1]"

- name: curl
  tag: curl
  match: "."
  replace:
  - t: "curl of"      # phrase(the 'curl of' a field)
  - test:
      if: "not(IsNode(*[1], 'leaf'))"
      then: [pause: short]
  - x: "*[1]"

- name: gradient
  tag: gradient
  match: "."
  replace:
  - test:
      if: "$Verbosity!='Terse'"
      then: [t: "gradient of"]      # phrase('divergence' from the mean)
      else: [t: "del"]      # phrase('divergence' from the mean)
  - test:
      if: "not(IsNode(*[1], 'leaf'))"
      then: [pause: short]
  - x: "*[1]"