Incest pornography can feature actual relatives, but the main type of this pornography simply uses actors of similar looks to suggest family relationship. Individuals who can change between top/dominant and bottom/submissive roles—whether from relationship to relationship or within a given relationship—are known as switches, though the term switch in this context is occasionally seen as derogatory and is rejected by many who might simplistically fit the definition. Insertion in pornography features women inserting various odd objects into their anus or vaginas. The interaction between tops and bottoms—where physical or mental control of the bottom is surrendered to the top—is sometimes known as power exchange, whether in the context of an encounter or a relationship. Sexual scenarios may involve male domination, female submission, exhibitionism and erotic entertainment. Within a BDSM or D/s context, facesitting can be an especially intense form of erotic humiliation. Mutual masturbation is a sexual act where two or more people stimulate themselves or one another sexually, usually with the hands. Watersports pornography features sexual activities involving urine, such as golden showers. Some productions are noted for sophisticated and/or experimental storytelling and animation techniques. The name of the practice, when it is done in a repeated in-and-out xxx milf motion, is derived from its passing resemblance to the dipping of a tea bag into a cup of hot water as a method of brewing tea. It may be used as foreplay, or as an alternative to sexual penetration. Lesbian pornography made for women is usually made by women, and usually features women who identify as lesbian or bisexual. Related genres include: Amateur pornography originally referred only to pornography produced by amateurs but now also includes professionally made pornography designed to appear as if it were amateur. Saliva pornography involves salivation and saliva. A celebrity may allow such a recording to surface willingly, as part of a publicity stunt. Technical Performance Measure (TPM)

Technical Performance Measure (TPM)

The TPM Process and its relationship to Requirement Management and Risk Mitigation

The TPM Process (Inputs & Outputs)