How to read code?

I've seen many MQ4 files (indicators or EA) written in these code. The only word recognizable is EMA. How was it generated and how to read it? Thank you for your help.
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for (li_4 = 0; li_4 < li_24; li_4++) g_ibuf_92[li_4] = iMAOnArray(g_ibuf_96, 0, 27, 0, MODE_EMA, li_4);
for (li_4 = 0; li_4 < li_24; li_4++) g_ibuf_100[li_4] = 2.618 * iMAOnArray(g_ibuf_92, 0, 27, 0, MODE_EMA, li_4);
for (li_4 = li_24; li_4 >= 0; li_4--) {
if (g_ibuf_80[li_4] == g_ibuf_84[li_4 + 1]) g_ibuf_84[li_4] = g_ibuf_80[li_4];
else {
if (g_ibuf_80[li_4 + 1] < g_ibuf_84[li_4 + 1] && g_ibuf_80[li_4] < g_ibuf_84[li_4 + 1]) g_ibuf_84[li_4] = MathMin(g_ibuf_84[li_4 + 1], g_ibuf_80[li_4] + g_ibuf_100[li_4]);
else {
if (g_ibuf_80[li_4 + 1] > g_ibuf_84[li_4 + 1] && g_ibuf_80[li_4] > g_ibuf_84[li_4 + 1]) g_ibuf_84[li_4] = MathMax(g_ibuf_84[li_4 + 1], g_ibuf_80[li_4] - g_ibuf_100[li_4]);
else {
if (g_ibuf_80[li_4] > g_ibuf_84[li_4 + 1]) g_ibuf_84[li_4] = g_ibuf_80[li_4] - g_ibuf_100[li_4];
else g_ibuf_84[li_4] = g_ibuf_80[li_4] + g_ibuf_100[li_4];