File structure description
MetastockTM uses three files to store its information:
Master: This is the main file that is created and put in a directory, and it contains the information of all the files that are stored in the directory.
Every stock is saved (stored) in an Fx.dat or Fx.mwd file. (The (x) here represents a number.)


Master
The Master file contains the following information:

Total Record Number

Highest Record Used 
Copyright Info 
Chat values usage 
File Number 
Number of Fields 
Auto Flag 
Record Size 
Symbol 
File Name 
Time Frame (I, D, W, M) 
Time Interval, the time between trades in minute intervals, minimum 1 minute 
First Date on Record 
The beginning of the trade for the stock of the present date 
Last Date on Record 
The end of the trade for the stock of the present date 
Start of trading 
End of trading


Fx.dat and Fx.mwd file

The Fx.dat and Fx.mwd files contain the following information:

Date

Time 
Open 
High 
Low 
Close 
Volume