Hi bunbo195
You meant that you want to change the text, right?
You can find the translation in this file: /administrator/language/en-GB/en-GB.plg_system_t4.ini
Look for this:
;====================================
;Tools tab
;====================================
T4_TOOLS_GROUP_LABEL = "Tools"
T4_TOOLS_GROUP_DESC = "Tools"
T4_ADVANCED_TOOLS_CSS_TITLE = "Edit Custom CSS"
T4_ADVANCED_TOOLS_CSS_DESC = "Inbuilt Custom CSS editor"
T4_ADVANCED_TOOLS_CSS_LABEL = "Edit"
T4_TOOL_EXPORT_NO_SELECTED_GROUPS_WARNING = "No Setting Groups is selected."
T4_TOOL_IMPORT_DATA_FILE_ERROR = "Data File Error."
T4_TOOL_IMPORT_DATA_FILE_EMPTY_WARNING = "No Data to import."
T4_TOOL_IMPORT_DONE = "Import Complete"
T4_ADVANCED_TOOLS_SCSS_TITLE = "Edit Custom SCSS"
T4_ADVANCED_TOOLS_SCSS_DESC = "Inbuilt tool to customize <strong>SCSS</strong>"
T4_ADVANCED_TOOLS_SCSS_LABEL = "Edit"
T4_CUSTOM_CSS_HAS_SAVED ="Custom CSS saved"
and add the translation for this constant: T4_ADVANCED_TOOLS_CSS_TITLE