diff --git a/Photos-version-5-database.md b/Photos-version-5-database.md
index 4bdbad4..4ff9096 100644
--- a/Photos-version-5-database.md
+++ b/Photos-version-5-database.md
@@ -47,6 +47,19 @@ If you change the sort order manually, the value of `Z_FOK_34ASSETS` of the phot
 
 See also the [discussion in #184](https://github.com/RhetTbull/osxphotos/issues/184)
 
+If you sort albums using the View | Sort menu, `ZGENERICALBUM.ZCUSTOMSORTKEY = 1` and:
+
+For sort by newest first:
+`ZGENERICALBUM.ZCUSTOMSORTASCENDING=0`
+
+For sort oldest first:
+`ZGENERICALBUM.ZCUSTOMSORTASCENDING=1`
+
+Sorted by Title
+`ZGENERICALBUM.ZCUSTOMSORTKEY=5`
+
+If manually sorted, `ZGENERICALBUM.ZCUSTOMSORTKEY=0` and the `Z_FOK_34ASSETS` column is updated.
+
 ## Import Sessions
 
 Import sessions are stored in `ZGENERICALBUM` with `ZKIND = 1506`.  When a photo is imported, the value ZGENERICASSET.ZIMPORTSESSION is set to the primary key of the corresponding import album in `ZGENERICALBUM`. `ZIMPORTSESSION` may be `null` meaning there is no associated import session.