1. The drawing number system for this project is described in the following for a typical drawing: aa-bccdd.eeff
• The 32 in the aa position denotes the CRaTER Project.
• The first digit after the - denotes a major, complete assembly (see Table of Contents).
• The second and third digits denote a major subassembly.
• The fourth and fifth digits denotes items constituent to the subassemblies.
• The first and second digits after the decimal (generally) from a parts list for a lowest level assembly.
• The third and fourth digits after the decimal are available if further breakdown is necessary.

2. Drawing size is indicated by prefixing the drawing size letter to the number. A T indicates a text document. A number prefix is also used for the number of sheets, ( e.g. 2B ).
   Revisions are shown by a letter in the Rev column.
• Bookmark releases are indicated by a number starting with 01.
• Controlled releases are designated as A.
• Releases which are controlled by another organization are indicated by an m following the revision letter; the revision shown is that of the other organization.
• Releases which are controlled jointly with another organization are indicated by an j as the final revision character.
• Controlled purchased parts are indicated by a > in this column.

3. Archives of drawings and documents are kept in the CRaTER file_cabinet directory. The file name is of the form bccdd_eeffSk_rn.type and is write-protected from all access but that of the configuration manager.
   • The first digits (bccdd_eeff) are the same as those in the Configuration Database. The 32- is missing, and the dot is replaced with an underscore.
   • In the case of a multi-sheet drawing, a capital S followed by a page number k preceeding the _rn suffix.
   • The revision number n of the drawing is an upper-case alphanumeric -- e.g. 01 or C. Typically, all revisions, past as well as current, are kept on file.
   To make the file system more accessible, a directory structure based on the first few digits' meaning is used. For example 32-12345_06_rK.dwg would be found in a directory ../file_cabinet/1/23/45/12345_06 along with all prior revisions.


4. Test reports are different. We use the Quantity field to indicate whether the report is for an (A)nalysis, (D)emonstration, (I)nspection, or (T)est. The documents stored on-line are just the forms which need to be filled in. Although some times these one page forms are complete by themselves, in general there will be pages of attachements. When the reports are completed and signed off, we indicate in the Size field the serial number of the instrument covered by the report (1T=sn1, 2T=sn2, 12T=both). The actual completed reports, however, are kept in hard copy by R&QA and not on-line.