diff --git a/doc/extensions_notes.md b/doc/extensions_notes.md
index f8d4c75c1..41365849b 100644
--- a/doc/extensions_notes.md
+++ b/doc/extensions_notes.md
@@ -7,7 +7,7 @@ The Proxmark3 client uses a wide range of files. Here is a brief recap to get yo
 | .exe | windows executable |
 | .bin | binary file,  can be firmware or memory dump of a tag |
 | .eml | text file, with memory dump of a tag |
-| .mfd | binary file,  usually created with Mifare Classic Tool app (MCT),  contains memory dump of tag. Very similar to .bin file |
+| .mfd | binary file, MIFARE file dump, name comes from NFC-Tools. Usually created with Mifare Classic Tool app (MCT) or NFC-Tools,  contains memory dump of tag. Very similar to .bin file |
 | .json | JSON file, usually settings file or it can also be a memory dump of a tag |
 | .dic | dictionary file. textual, with keys/passwords one line / key |
 | .elf | binary proxmark3 device firmware file. |
@@ -15,3 +15,5 @@ The Proxmark3 client uses a wide range of files. Here is a brief recap to get yo
 | .lua | text file, contains lua script to be run inside client.  or called with -l |
 | .pm3 | text file, with numbers ranging 0-255 or -127 - 128.  Contains trace signal data for low frequency tags (data load) |
 | .trace | binary file,  contains trace log data usually from high frequency tags.  (hw trace load) |
+| .log | text file, our log file, contains the output from almost all commands you run inside Proxmark3 client |
+| .history | text file, our command log file, contains the commands you ran inside Proxmark3 client |