My so-called "Tickler File" is a box with Classei sessions (130 gr / sqm, standing, open on three sides, the loose-leaf). 31 days sessions are provided with tabs 1-31, 12 months folders with riders from January to December. A classic 43-Folder system also. For manual administration of birthday memories of Classei-Tickler is designed beautifully. On the cover page of the monthly and daily sessions I write down who [...]