print() shows the reliability coefficients for the general factor and the
group factors, for a single group or for each group: the reliability
coefficients (omega total, omega hierarchical, and omega subscale, standardized
Cronbach's alpha, and the H index) and the common-variance indices (the explained
common variance, ECV, and the percent of uncontaminated correlations, PUC).
format() assembles the same report and returns it as a character vector;
print() is cat(format(x), sep = "\n"). The lines follow the active console
theme, so they are plain when colours are disabled (for example when captured
into a file or stripped with cli::ansi_strip()).