diff --git a/X16 Reference - 13 - Working with CMDR-DOS.md b/X16 Reference - 13 - Working with CMDR-DOS.md
index eec59d0..36bd96e 100644
--- a/X16 Reference - 13 - Working with CMDR-DOS.md
+++ b/X16 Reference - 13 - Working with CMDR-DOS.md
@@ -277,7 +277,7 @@ And this table shows which of the standard commands are supported:
| CHANGE DIRECTORY | `CD`[_path_]`:`_name_ | Change the current sub-directory| yes |
| CHANGE DIRECTORY | `CD`[_medium_]`:←` | Change sub-directory up | yes |
| CHANGE PARTITION | `CP` _num_ | Make a partition the default | yes |
-| COPY | `C`[_path_a_]`:`_target_name_`=`[_path_b_]`:`_source_name_[`,`...] | Copy/concatenate files | yes |
+| COPY | `C`[_path_a_]`:`_target_name_`=`[_path_b_]`:`_source_name_[`,`...] | Copy/concatenate files | yes7 |
| COPY | `C`_dst_medium_`=`_src_medium_ | Copy all files between disk | no1|
| DUPLICATE | `D:`_dst_medium_``=``_src_medium_ | Duplicate disk | no1|
| FILE LOCK | `F-L`[_path_]`:`_name_[`,`...] | Enable file write-protect | yes |
@@ -333,6 +333,7 @@ And this table shows which of the standard commands are supported:
* 4: CMDR-DOS was architected to run on the main computer, so it shouldn't be DOS that keeps track of the time
* 5: Instead of testing the ROM, this command currently verifies that no buffers are allocated, otherwise it halts. This is used by unit tests to detect leaks.
* 6: Repurposed for SD card read and write mode. _flag_ selects whether fast read (auto_tx) and fast writes are enabled. 0=none, 1=auto_tx, 2=fast writes, 3=both
+* 7: Doesn't work in the emulator and hostfs. With the emulator, a mounted SD card image is required.
The following special file syntax and `OPEN` options are specific to CMDR-DOS: