-11 mind by others for future purposes: possible actions that NPMs can take to the frequency and duration of access act as an agent of change. to the open air (which should be for at least one hour a day), the presence of an outdoor area, the presence in the cell of a table, a chair, a bed, a bathroom, sufficient light and air, the size of the cell, the possibility of calling a staff member from inside the cell, access to books and newspapers, and access to the same food, hygiene and cell conditions as other detainees. Finally, because of the particularly serious effects that solitary confinement has on isolated monitoring operating by in prisoners, medical prisons is effective authorities of critical importance. In this area NPMs should start by monitoring the following issues: did a visit take place before the application of the solitary confinement measure? Do doctors conduct daily visits? Do visits take place in the cell? Do smooth cells exist? Do doctors prescribe confinement in smooth cells as a way to prevent self-harm or suicide? Were the visits long enough? Finally, the handbook takes into account the issue of recommendations, follow-up and Monitoring Solitary Confinement in Prison