diff --git a/ai.py b/ai.py
index ff73a02..3c30262 100644
--- a/ai.py
+++ b/ai.py
@@ -37,10 +37,8 @@ def aistats():
 
 
 ################################################################################
-# /run_ai_on -> CAM: needs more thought (what actual params, e.g list of file -
-# tick, but which face or faces? are we forcing a re-finding of unknown faces
-# or just looking for matches? (maybe in the long run there are different
-# routes, not params - stuff we will work out as we go)
+# /run_ai_on -> creates a job, with extras containing entry ids (eid-0, eid-1,
+# etc.) and person=all|dad, etc.   Room to consider threshold, algo, etc.
 ################################################################################
 @app.route("/run_ai_on", methods=["POST"])
 @login_required
@@ -48,7 +46,6 @@ def run_ai_on():
     jex=[]
     for el in request.form:
         jex.append( JobExtra( name=f"{el}", value=request.form[el] ) )
-    print( f"would create new job with extras={jex}" )
     job=NewJob( "run_ai_on", 0, None, jex )
     st.SetAlert("success")
     st.SetMessage( f"Created&nbsp;<a href=/job/{job.id}>Job #{job.id}</a>&nbsp;to Look for face(s) in selected file(s)")
diff --git a/face.py b/face.py
index f7acd58..d84ad3e 100644
--- a/face.py
+++ b/face.py
@@ -2,6 +2,16 @@ from main import db, app, ma
 from sqlalchemy import Sequence
 from sqlalchemy.exc import SQLAlchemyError
 
+# pylint: disable=no-member
+
+################################################################################
+# Class describing Face in the database and DB via sqlalchemy
+# - face contains the binary version of numpy array so we dont need to recalc it
+# - locn is the pixel coords of the face (top, right, bottom, left)
+# - refimg_lnk and facefile_lnk are viewOnly / just for convenience in viewer
+# - refimg is a real link to the refimg used for this face (its is only used in
+#   viewer, and is either set when there is a matched face, or None if no match
+################################################################################
 class Face(db.Model):
     __tablename__ = "face"
     id = db.Column(db.Integer, db.Sequence('face_id_seq'), primary_key=True )
@@ -14,6 +24,13 @@ class Face(db.Model):
     def __repr__(self):
         return f"<id: {self.id}, face={self.face}, locn={self.locn}"
 
+################################################################################
+# Class describing FaceFileLink in the database and DB via sqlalchemy
+# each face comes from a file and used a model to find the face
+# this is not perfect, each face in the same file is always foudn with the same
+# model - so really should have ModelFileLink or something, in the long run
+#         this might even be better as ScanDetailsFileLink  and ScanDetails
+################################################################################
 class FaceFileLink(db.Model):
     __tablename__ = "face_file_link"
     face_id = db.Column(db.Integer, db.ForeignKey("face.id"), primary_key=True )
@@ -23,6 +40,11 @@ class FaceFileLink(db.Model):
     def __repr__(self):
         return f"<face_id: {self.face_id}, file_eid={self.file_eid}, model_used: {self.model_used}"
 
+################################################################################
+# Class describing FaceRefimgLink in the database and DB via sqlalchemy
+# connects / implies a face has matched a refimg and we keep the distance too
+# distance is mainly for debugging for now and shown in viewer
+################################################################################
 class FaceRefimgLink(db.Model):
     __tablename__ = "face_refimg_link"
     face_id = db.Column(db.Integer, db.ForeignKey("face.id"), primary_key=True )