concept: initial-successor-index

concept: https://vernacular.cloud/uV5KZmd73fam1Bxbn3Xgsaok/
this version: https://vernacular.cloud/0.0.4/uV5KZmd73fam1Bxbn3Xgsaok/

Broader

• category
• device
• INFINITY

Narrower

• initial
• index
• successor