Are there predefined macros in XCELIUM (e.g. to be used with 'ifdef )

To write portable SV code (to be used with other vendors tools such as Synopsys or Mentor), I need to add an " 'ifdef 'else  " condition in order to include tool-dependent packages such as "cds_rnm_pkg::*".

I just learned that there is a default macro "XCELIUM" which can be used (and for the Synopys tool for example there is "VCS" defined):

'ifdef XCELIUM

   ...import Cadence packages ...

'elsif VCS

  ...import SNPS packages ...

'endif

1) Now I am wondering what other predefined macros are available, since i did not find this information when searching the XCELIUM user guide or on the Cadence website ?

2) Is there a more generic definition than "XCELIUM" available to indicate the Cadence tool-usage ? Because when the tool-name is changing (e.g. from INNOVUS to XCELIUM to ABCDEF)  then I would need to modify the code manually everytime.