=== How to add a file extension in UBIK ===
# Open {{UBIK Studio}} and connect to database.<br/>In the [[{{Class_Browser]] }} switch to the ''[[Class_Browser#Content|Content view]]''.<br/>[[File:Add_a_file_extension_01.png|440px|border|alt=Add a file extension|Add a file extension]]<br/>
# Add a ''[[HowTo:Create_a_new_Selective_List|SelectiveItem]]'' in Admin mode<br/>Now browse to {System.List} in the Class Browser and open the [[MetaClass]] '''SELECTIVEITEM''' in the {{Bulk_Editor}} (via Drag & Drop).<br/>[[File:Add_a_file_extension_02.png|220 px|border|alt=Add a file extension|Add a file extension]]<br/>[[File:Add_a_file_extension_03.png|660 px|border|alt=Add a file extension|Add a file extension]]<br/>Every row in the Bulk Editor is shown greyed and can´t be edited, because the MetaClass SELECTIVEITEM is a system MetaClass. So we need to enable the ''[[UBIK_Studio_Basics#Admin_mode|Admin mode]]''.<br/>[[File:Add_a_file_extension_04.png|660 px|border|alt=Add a file extension|Add a file extension]]<br/>[[File:Add_a_file_extension_05.png|220 px|border|alt=Add a file extension|Add a file extension]]<br/>After enabling the Admin mode you can add a new row for your file extension.<br/>[[File:Add_a_file_extension_06.png|880 px|border|alt=Add a file extension|Add a file extension]]
# Add your new file extension to the selective list<br/>Open the SELECTIVELIST MetaClass and connect the objects called FILETYPES with the {{Relation_Editor}} to add your new file extension via drag & drop.<br/>[[File:Add_a_file_extension_07.png|220 px|border|alt=Add a file extension|Add a file extension]]<br/>[[File:Add_a_file_extension_08.png|220 px|border|alt=Add a file extension|Add a file extension]]<br/>[[File:Add_a_file_extension_09.png|220 px|border|alt=Add a file extension|Add a file extension]]<br/>{{Attention|Please do not forget the save button.}}