Changes

.[[CIA]] - CTR Importable Archive - This format allows the installation titles to the 3DS. CIA files can compile a CXI for installation to either the SDMC or CTR NAND. CIA files can also compile .SRL files (format for DS(i) executable images) for installation to the TWL NAND of the 3DS.

.[[CIA]] - CTR Importable Archive - This format allows the installation titles to the 3DS. CIA files can compile a CXI for installation to either the SDMC or CTR NAND. CIA files can also compile .SRL files (format for DS(i) executable images) for installation to the TWL NAND of the 3DS.

.[[TMD]] - Title Metadata - The format is used with installed/installable titles. Notably they are found in .[[CIA]] files (plain text), on the [[SD Filesystem#title|SD card]] (encrypted) and on Nintendo's CDN (plain text).

.[[TMD]] - Title Metadata - The format is used with installed/installable titles. Notably they are found in .[[CIA]] files (plain text), on the [[SD Filesystem#title|SD card]] (encrypted), NAND and on Nintendo's CDN (plain text).

.CDI - CTR Development Image - CDI files are system processes which other types of applications depend on for access to various other lower level functions. CDI are normally the same titles as listed in a CXI header's dependency list, they are just compiled to a different format.  The difference is that CDI is used for a different (test) environment. They're loaded into hardware debugger's memory, along with the 2 cores in order to execute.  

.CDI - CTR Development Image - CDI files are system processes which other types of applications depend on for access to various other lower level functions. CDI are normally the same titles as listed in a CXI header's dependency list, they are just compiled to a different format.  The difference is that CDI is used for a different (test) environment. They're loaded into hardware debugger's memory, along with the 2 cores in order to execute.  

.CIP - (CTR Initial Process)

.CIP - (CTR Initial Process)

.[[SD Filesystem#title|CTX]] - The function of this format is not fully understood. Though the file is used in the process of downloading titles from the eShop, and is deleted once the download is completed. Presumably encrypted with console-unique key, since this is stored under the title directory on sdcard. It is only 1.50kbyte. Here is an example.[http://dl.dropbox.com/u/37418652/00000000.ctx]

.[[SD Filesystem#title|CTX]] - When beginning eShop app downloads, this file is created. Later this file is written with actual data. When the download is completed, the file is deleted from SD card.(This might then be moved to NAND) This is encrypted with a per-console key. It contains a signed cert followed by unknown data. It is only 1.50kbyte. Here is an example.[http://dl.dropbox.com/u/37418652/00000000.ctx]

.[[MPO]] - Multi-Picture Object Format - Document describing the file format used in mpo files: http://www.cipa.jp/english/hyoujunka/kikaku/pdf/DC-007_E.pdf

.[[MPO]] - Multi-Picture Object Format - Document describing the file format used in mpo files: http://www.cipa.jp/english/hyoujunka/kikaku/pdf/DC-007_E.pdf