Hubble Advanced Products API ============================ .. _hap_api: Drizzlepac has evolved over time from not only being responsible for creating the calibration pipeline drizzled products (i.e., ipppssoot_dr[c|z].fits), but also to being responsible for the generation of the two types of Hubble Advanced Products (HAP). The HAP products are Single Visit Mosaics (SVMs) and Multiple Visit Mosaics (MVMs) and the creation of these products has been incorporated into the calibration pipeline processing. SVM and MVM drizzled products are distingushed from pipeline drizzled counterparts and each other through their filenames, as well as internal contents. SVM: hst_______dr[c|z].fits) MVM: hst_skycell_pxy____