https://cxc.cfa.harvard.edu/sherpa/ahelp/image_getregion.html
Ahelp: image_getregion - CIAO 4.18 Sherpa
The Sherpa package for fitting and modeling data (part of CIAO).
imageciaosherpa
https://api.drupal.org/api/drupal/8.9.x/search/getRegion
Search for getRegion | Drupal API
search fordrupalapi
https://asc.harvard.edu/sherpa/ahelp/image_getregion.html
Ahelp: image_getregion - CIAO 4.18 Sherpa
The Sherpa package for fitting and modeling data (part of CIAO).
imageciaosherpa