Looking at the catalogue help

Help
Adding stamps
Adding to your collection
Album
Catalog value
Catalogue numbers
Color
Currency
Date
Denomination
Description
Design
Design type
Emboss
Function
Image
Issue
Issuer
Item
Looking at the catalogue
Note
Object
Occupation
On
Original issuer
Overprint
Overprint color
Owner
Paper
Paper color
Sorting
Stamp
Stamp page
Unissued
Upload
Value
Variant
Visibility
Watermark
There are several ways to look at the stamp catalogue.

List format

The list format is a flat list of types, with the ten or so most-important fields listed. It includes sorting and filtering controls for each displayed field.

To change the sorting, click on the names of the fields at the top. The first click sorts up, a second click changes to sort down. The previously-clicked-on fields are still used as tie breakers, so you can click on several fields in a row to set up particular sort patterns.

The list format is best for finding patterns in groups of stamps, especially for groups spanning multiple issuers.

Array format

Array format lists stamps by image, similar to stock sheets.

Sorting and filtering set in another format is remembered and used, if not displayed.

Catalog format

This is a traditional catalogue listing.

Filtering and sorting affect the catalogue listing as with the other formats; the results may look a little strange however.

Raw format

Raw format lists entire stamp type records, displaying the data exactly as it is stored, mysterious id numbers and all. (Ids are linked to the values they represent, so you can always click through to see.)

Raw format is most useful for maintaining the data, and it's useful for filtering and sorting on the obscure fields not displayed in other formats.

Individual stamps

Each stamp type has its own page, listing all the information about it.

On the left side are all the images of this type, not listed in any particular order.

The middle has the textual fields, typically linked to objects describing the value if appropriate, or to a filtered list of all types with the same value.

The right side has notes. It will list both public notes and your private notes.