Pre-release preparation could include the following: transfer to a less secure institution; a programme of short-term releases which might progress from supervised to unsupervised outings. The purpose of such programmes would be to reduce the effects of institutionalisation by aiding, for example, familiarisation with the outside world or maintaining relationships with family or relatives; temporary release to attend work experience or training. For example, prisoners in the training unit who are deemed suitable may attend the workshops run by Prisoners Aid through Community Effort, a voluntary organisation for the care and education of offenders founded in 1969, which runs a training workshop at Santry where various skills can be acquired that increase the possibility of finding work. The Santry workshop is attended both by serving prisoners on day release programmes and some who have recently finished their sentences. Prisoners may also be granted weekly renewable temporary release after careful screening to take up employment or to continue education or vocational training courses; and, pre-release preparation often includes temporary release to attend residential treatment for alcohol or drug addiction.