diff --git a/examples.lua b/examples.lua
index a7bde53..fd9558f 100755
--- a/examples.lua
+++ b/examples.lua
@@ -55,18 +55,18 @@ print_bitmap(bitmap_1)
 print("---")
 
 -- everything looks like U+FFFD REPLACEMENT CHARACTER without fonts
-text_bitmap_0 = hexdraw.render_utf8_line("wð♥𐍈😀!🂐겫")
+text_bitmap_0 = hexdraw.render_text("wð♥𐍈😀!🂐겫")
 print_bitmap(text_bitmap_0)
 print("---")
 
 hexdraw.load_hex_font("/usr/share/unifont/unifont.hex")
 hexdraw.load_hex_font("unifont_upper.hex")
 
-text_bitmap_1 = hexdraw.render_utf8_line("wð♥𐍈😀!🂐겫")
+text_bitmap_1 = hexdraw.render_text("wð♥𐍈😀!🂐겫")
 print_bitmap(text_bitmap_1)
 print("---")
 
-text_bitmap_2 = hexdraw.render_utf8_line(
+text_bitmap_2 = hexdraw.render_text(
    "wð♥𐍈😀!🂐겫",
    {
       background_color = { 7 },
@@ -77,7 +77,7 @@ text_bitmap_2 = hexdraw.render_utf8_line(
 print_bitmap(text_bitmap_2)
 print("---")
 
-text_bitmap_3 = hexdraw.render_utf8_line(
+text_bitmap_3 = hexdraw.render_text(
    "wð♥𐍈😀!🂐겫",
    {
       background_color = { 7 },
@@ -96,15 +96,15 @@ tga_encoder.image(text_bitmap_1):save(
    "text_bitmap_1.tga",
    {
       colormap = {
-         { 255, 127, 000 },
-         { 000, 127, 255 },
+         [0]={ 255, 127, 000 },
+         [255]={ 000, 127, 255 },
       }
    }
 )
 
 -- R8G8B8A8 compressed image
 tga_encoder.image(
-   hexdraw.render_utf8_line(
+   hexdraw.render_text(
       "wð♥𐍈😀!🂐겫",
       {
          background_color = { 0, 0, 0, 0 },
@@ -122,7 +122,7 @@ tga_encoder.image(
 
 -- uncompressed grayscale image
 tga_encoder.image(
-   hexdraw.render_utf8_line(
+   hexdraw.render_text(
       "wð♥𐍈😀!🂐겫",
       {
          background_color = { 0 },
@@ -144,7 +144,7 @@ file:close()
 print(text)
 
 -- render text (RGB, white-on-black)
-local pixels = hexdraw.render_utf8_text(
+local pixels = hexdraw.render_text(
    text,
    {
       background_color = { 000, 000, 000 },
@@ -186,7 +186,7 @@ local file = io.open("UTF-8-demo.txt")
 local text = file:read("*all")
 file:close()
 
-local pixels = hexdraw.render_utf8_text(text)
+local pixels = hexdraw.render_text(text)
 
 -- tga_encoder uses grayscale colors if no colormap is given
 tga_encoder.image(pixels):save("UTF-8-demo.tga")
diff --git a/hexdraw.lua b/hexdraw.lua
index 2373e76..00d070d 100755
--- a/hexdraw.lua
+++ b/hexdraw.lua
@@ -345,7 +345,7 @@ assert( nil == is_combining_character["00F0"] )
 assert( nil == is_combining_character["2665"] )
 assert( nil == is_combining_character["010348"] )
 
-hexdraw.render_utf8_line = function(utf8_text, properties)
+local render_utf8_line = function(utf8_text, properties)
    assert(
       "string" == type(utf8_text)
    )
@@ -440,7 +440,7 @@ hexdraw.render_utf8_line = function(utf8_text, properties)
    return result
 end
 
-hexdraw.render_utf8_text = function(utf8_text, properties)
+hexdraw.render_text = function(utf8_text, properties)
    local properties = properties or {}
    assert(
       "table" == type(properties)
@@ -462,7 +462,7 @@ hexdraw.render_utf8_text = function(utf8_text, properties)
    local result
    -- TODO: implement UAX #14
    for utf8_line in string.gmatch(utf8_text .. "\n", "([^\n]*)\n") do
-      local pixels = hexdraw.render_utf8_line(
+      local pixels = render_utf8_line(
          utf8_line,
          properties
       )