HTTPClient: TFPHttpClient;
  {$ENDIF}
begin
  // What's the current running groff version?
  if RunCommand('troff', ['--version'], GroffOutputVersion) then
  begin
    edtGroffInstalledVersion.Text := GroffOutputVersion;
    if pos('GNU', GroffOutputVersion) = 0 then
       ShowMessage('groffstudio thinks that your installed version of troff is not GNU troff.' + LineEnding +
       'If this is correct, you are advised to fix this before continuing.' + LineEnding +
       'If it is an error, please tell me so I can improve this detection.');
    hasGroff := True;
  end else begin
    edtGroffInstalledVersion.Text := 'n/a';
    hasGroff := False;
    lblTroffCommandNotFound.Visible := True;
  end;