diff --git a/.gitignore b/.gitignore
index e37b125..a93ed3a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -54,4 +54,5 @@ dkms.conf
 build/
 *.pyc
 __pycache__/
-.vscode/
\ No newline at end of file
+.vscode/
+.command_prefix.lua
\ No newline at end of file
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4e5d40b..06755b6 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -20,7 +20,28 @@ install(TARGETS rds95 DESTINATION ${CMAKE_INSTALL_PREFIX}/bin)
 
 install(CODE
 "
-  execute_process(COMMAND ${CMAKE_COMMAND} -E copy
-    \"${CMAKE_CURRENT_SOURCE_DIR}/src/command.lua\"
-    \"$ENV{HOME}/.rds95.command.lua\")
-")
+  # Define the paths for the source and destination files
+  set(PREFIX_FILE \"${CMAKE_CURRENT_SOURCE_DIR}/.command_prefix.lua\")
+  set(COMMAND_FILE \"${CMAKE_CURRENT_SOURCE_DIR}/src/command.lua\")
+  # The $ENV{HOME} variable is evaluated at install time, not configure time
+  set(DEST_FILE \"$ENV{HOME}/.rds95.command.lua\")
+
+  # Check if the optional prefix file exists
+  if(EXISTS \${PREFIX_FILE})
+    # If it exists, read the prefix and the main command file
+    message(STATUS \"Prefix file found. Combining with command.lua.\")
+    file(READ \${PREFIX_FILE} PREFIX_CONTENT)
+    file(READ \${COMMAND_FILE} COMMAND_CONTENT)
+    # Concatenate them, with the prefix content first
+    set(FINAL_CONTENT \"\${PREFIX_CONTENT}\n\${COMMAND_CONTENT}\")
+  else()
+    # Otherwise, just use the content of the main command file
+    message(STATUS \"Prefix file not found. Using command.lua directly.\")
+    file(READ \${COMMAND_FILE} FINAL_CONTENT)
+  endif()
+
+  # Write the resulting content to the destination file
+  message(STATUS \"Installing command file to \${DEST_FILE}\")
+  file(WRITE \${DEST_FILE} \"\${FINAL_CONTENT}\")
+"
+)
\ No newline at end of file
diff --git a/plugin.lua b/plugin.lua
index 8ef9209..90a0a9c 100644
--- a/plugin.lua
+++ b/plugin.lua
@@ -16,7 +16,7 @@ function set_rds_program_defaults() end
 ---@return nil
 function reset_rds() end
 
----This function is called by the C core after the script is loaded.
+---This function is called by the C core after we reset data, or have no data in general
 ---It should be defined by the user in the script.
 ---@return nil
 function on_init() end
diff --git a/src/ascii_cmd.c b/src/ascii_cmd.c
index 37a8c09..7b8078b 100644
--- a/src/ascii_cmd.c
+++ b/src/ascii_cmd.c
@@ -199,12 +199,6 @@ static void handle_ertprun(char *arg, RDSModulator* mod, char* output) {
 	strcpy(output, "+");
 }
 
-static void handle_grpseq(char *arg, RDSModulator* mod, char* output) {
-	if (arg[0] == 0) set_rds_grpseq(mod->enc, DEFAULT_GRPSQC);
-	else set_rds_grpseq(mod->enc, arg);
-	strcpy(output, "+");
-}
-
 static void handle_eonen(char *arg, char *pattern, RDSModulator* mod, char* output) {
 	mod->enc->data[mod->enc->program].eon[atoi(pattern)-1].enabled = atoi(arg);
 	strcpy(output, "+");
@@ -307,7 +301,6 @@ static const command_handler_t commands_eq2[] = {
 
 static const command_handler_t commands_eq7[] = {
 	{"RTPRUN", handle_rtprun, 6},
-	{"GRPSEQ", handle_grpseq, 6},
 };
 
 static const command_handler_t commands_eq8[] = {
diff --git a/src/command.lua b/src/command.lua
index a008067..c859bfd 100644
--- a/src/command.lua
+++ b/src/command.lua
@@ -10,6 +10,15 @@ if type(data) == "string" then
         elseif data == "reset" then
             reset_rds()
             return "+"
+        elseif data == "pi" then return string.format("PI=%s\r\n", string.format("%x", get_rds_pi()))
+        elseif data == "pty" then return string.format("PTY=%s\r\n", string.format("%d", get_rds_pty()))
+        elseif data == "ecc" then return string.format("ECC=%s\r\n", string.format("%x", get_rds_ecc()))
+        elseif data == "slcd" then return string.format("SLCD=%s\r\n", string.format("%x", get_rds_slc_data()))
+        elseif data == "ct" then return string.format("CT=%s\r\n", string.format("%d", get_rds_ct()))
+        elseif data == "dpty" then return string.format("DPTY=%s\r\n", string.format("%d", get_rds_dpty()))
+        elseif data == "tp" then return string.format("TP=%s\r\n", string.format("%d", get_rds_tp()))
+        elseif data == "ta" then return string.format("TA=%s\r\n", string.format("%d", get_rds_ta()))
+        -- TODO: more
         end
     end
     cmd = cmd:lower()
@@ -131,6 +140,12 @@ if type(data) == "string" then
         if not timeout then return "-" end
         set_rds_rt_text_timeout(timeout)
         return "+"
+    elseif cmd == "grpseq" then
+        set_rds_grpseq(value)
+        return "+"
+    elseif cmd == "grpseq2" then
+        set_rds_grpseq2(value)
+        return "+"
     else
         return "?"
     end