right-handed helix

symbols: $R$, $P$
https://doi.org/10.1351/goldbook.14213
Helix in which the continuous helical line, approximating the sequence of bonds along the polymer main chain, winds anticlockwise moving towards the observer, i.e., seen from the positive axis direction (see the figures in chain identity period).
Note: In compliance with prevailing stereochemical terminology conventions, the descriptor \(P\) (plus) is recommended rather than \(R\), presently widely used in polymer literature.
Source:
PAC, 2011, 83, 1831. (Definitions of terms relating to crystalline polymers (IUPAC Recommendations 2011)) on page 1842 [Terms] [Paper]