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WHMCS uses TinyMCE editor for writing emails and the knowledgebase.Check the latest TinyMCE Spellchecker plug-in download hereTinyMCE Spellchecker V2.02 plug-in hereUpload the archive it to /whmcs_path/admin_path/editor/plugins/. Extract that archive and you should get a folder called 'spellchecker',
Edit the “config” file for TinyMCE in order to activate the new plug-in ,The file is located in /whmcs_path/admin_path/editor/editor.php, using a text editor (use Notepad if your not sure what to use).
Edit the line below :
Code:plugins : "style,table,advhr,advimage,advlink,iespell,inlinepopups,insertdatetime,media,searchreplace,contextmenu,paste,directionality,fullscreen,visualchars,xhtmlxtras",Copy and paste the code below and replace the line:
Code:plugins : "style,table,advhr,advimage,advlink,iespell,inlinepopups,insertdatetime,media,searchreplace,contextmenu,paste,directionality,fullscreen,visualchars,xhtmlxtras,spellchecker",Edit the line below which will add the spellchecker button into the menu. You can mov ethe button based on the placement of the added code:
Code:theme_advanced_buttons3 : "tablecontrols,|,hr,removeformat,visualaid,|,sub,sup,|,charmap,emotions,iespell,media,advhr,|,ltr,rtl,|,fullscreen",Copy and paste the code below and replace the line:
Code:theme_advanced_buttons3 : "tablecontrols,|,hr,removeformat,visualaid,|,sub,sup,|,charmap,emotions,iespell,media,advhr,|,ltr,rtl,|,fullscreen|,spellchecker",Now upload the editor.php file to /whmcs_path/admin_path/editor/