catch of the day & CPM disk format

I found a box of old computer stuff today. I didn't think it was much till I cleaned it up and looked at it. Boy, appearances can be deceiving! Here's what I got: Qume Sprint 9/45 and 9/55 terminal service manual, operator's instruction manual and intefacing information. THREE BRAND NEW WordStar 3.0 packages with disks and manuals in the original MicroPro binders. THREE BRAND NEW SuperSort 1.6 packages with disks and manuals in the original MicroPro binders. One BRAND NEW CalcStar 1.2 package with disk and manual in the original MicroPro binder. THREE BRAND NEW SpellStar 1.2 packages with disks and manuals in the original plastic bag from MicroPro. THREE BRAND NEW MailMerge 3.0 packages with disks and manuals in the original plastic bag from MicroPro. One brand new package of WorkSheet Wizard with disk and manual in the original plastic bag. The docs for this one state that it's for a North Star Advantage. The manuals HINT that all of this is for a CPM system. All the disks are hard sectored 5 1/4" disk with 11 index/sector holes. Q: What system other than North Star used hard sectored 10 sector disks? Joe