Effective Space of Archival Materials (Nationwide Institute) Don’t do just about anything which is not Reversible edit source edit Don’t use pen to publish on any document or picture, also regarding the straight straight back. Only use soft pencil to record identification from the straight straight back of a photograph. Be cautious that the writing will not leave the feeling or embossing at first glance. Write over the base or sides only. Additionally it is archivally safe to utilize a PIGMA pen to publish regarding the straight back of photographs. Try not to make repairs with ordinary adhesive tape. There are special archival tapes and other materials readily available for this purpose. Analysis appropriate archival strategies prior to trying any fix or cleaning.