diff --git a/man/spec_angle.Rd b/man/spec_angle.Rd
index 5df2b13..a68d6d6 100644
--- a/man/spec_angle.Rd
+++ b/man/spec_angle.Rd
@@ -4,7 +4,7 @@
 \alias{spec_angle}
 \title{Generate rotation angle for continuous values}
 \usage{
-spec_angle(x, begin, end)
+spec_angle(x, begin, end, scale_from = NA)
 }
 \arguments{
 \item{x}{continuous vectors of values}
@@ -12,6 +12,9 @@
 \item{begin}{Smallest degree to rotate. Default is 0}
 
 \item{end}{Largest degree to rotate. Default is 359.}
+
+\item{scale_from}{input range (vector of length two). If not given,
+is calculated from the range of x}
 }
 \description{
 Generate rotation angle for continuous values
diff --git a/man/spec_color.Rd b/man/spec_color.Rd
index ab25980..131bcde 100644
--- a/man/spec_color.Rd
+++ b/man/spec_color.Rd
@@ -5,7 +5,7 @@
 \title{Generate viridis Color code for continuous values}
 \usage{
 spec_color(x, alpha = 1, begin = 0, end = 1, direction = 1,
-  option = "D", na_color = "#BBBBBB")
+  option = "D", na_color = "#BBBBBB", scale_from = NA)
 }
 \arguments{
 \item{x}{continuous vectors of values}
@@ -25,6 +25,9 @@
 and "viridis" (or "D", the default option).}
 
 \item{na_color}{color code for NA values}
+
+\item{scale_from}{input range (vector of length two). If not given,
+is calculated from the range of x}
 }
 \description{
 Generate viridis Color code for continuous values
diff --git a/man/spec_font_size.Rd b/man/spec_font_size.Rd
index aeacd93..9688dec 100644
--- a/man/spec_font_size.Rd
+++ b/man/spec_font_size.Rd
@@ -4,7 +4,8 @@
 \alias{spec_font_size}
 \title{Generate common font size for continuous values}
 \usage{
-spec_font_size(x, begin = 8, end = 16, na_font_size = 12)
+spec_font_size(x, begin = 8, end = 16, na_font_size = 12,
+  scale_from = NA)
 }
 \arguments{
 \item{x}{continuous vectors of values}
@@ -14,6 +15,9 @@
 \item{end}{Largest font size. Default is 20.}
 
 \item{na_font_size}{font size for NA values}
+
+\item{scale_from}{input range (vector of length two). If not given,
+is calculated from the range of x}
 }
 \description{
 Generate common font size for continuous values