diff --git a/src/uxn_tutorial_day_7.gmo b/src/uxn_tutorial_day_7.gmo
index f7e2780..7ea16e7 100644
--- a/src/uxn_tutorial_day_7.gmo
+++ b/src/uxn_tutorial_day_7.gmo
@@ -13,16 +13,18 @@ the file device in the varvara computer allows us to read and write to external
 its ports are normally defined as follows:
 
 ```
-|a0 @File [ &vector $2 &success $2 &offset-hs $2 &offset-ls $2 &name $2 &length $2 &load $2 &save $2 ]
+|a0 @File [ &vector $2 &success $2 &stat $2 &delete $1 &append $1 &name $2 &length $2 &load $2 &save $2 ]
 ```
 
 * the vector short is currently unused
 * the success short stores the length of the data that was successfully read or written, or zero if there was an error
-* offset-hs and offset-ls are a couple of shorts that compose a 32-bits number corresponding to an offset for the reading or writing of a file: how many bytes should the operation skip from the beginning of the file.
 * the name short is for the memory address where the filename (null-terminated, i.e. with a 00) is stored
 * the length short is the amount of bytes to read or write: don't forget that the program memory is ffff plus 1 bytes long, and that the program itself is stored there!
 * the load short is for the starting memory address where the read data should be stored
 * the save short is for the starting memory address where the data to be written is stored
+* the stat short is similar to load, but reads the directory entry for the filename
+* the delete byte deletes the file when any value is written to it
+* setting the append byte to 01 makes save append data to the end of the file, when it is the default, 00, save overwrites the contents from the start
 
 a read operation is started when the load short is written to, and a write operation is started when the save short is written to.
 
@@ -82,7 +84,7 @@ in order to write a file, we need:
 * the amount of bytes that we want to write into the file
 * the label for the section of program memory that we will write into the file
 
-keep in mind that the file will be completely overwritten unless you set some offset!
+keep in mind that the file will be completely overwritten unless you set append to 01!
 
 the following program will write "hello" and a newline (0a) into a file called "test.txt":
 
@@ -114,18 +116,6 @@ note how similar it is to the load-file subroutine!
 
 the only differences, beside the use of File/save instead of File/load, are the file length and the comparison for the success short: in this case we know for sure how many bytes should have been written.
 
-## offsets
-
-if we wanted to read or write our file starting from a specific position (in bytes) in it, different from its beginning, we'd need to set the File/offset-ls short, and very rarely (i guess) the File/offset-hs short.
-
-for example, if we wanted to continue writing to our file after the "hello" and newline, we could set:
-
-```
-#0006 .File/offset-ls DEO2
-```
-
-and then the next write will not overwrite the file, but append to it starting at position 6 (i.e. just after the newline)
-
 ## a brief case study: the theme file
 
 programs for the varvara computer written by 100r tend to have the ability to read a "theme" file that contains six bytes corresponding to the three shorts for the system colors.